doodle/editor_ui.go

567 lines
14 KiB
Go
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package doodle
import (
"fmt"
"path/filepath"
"strconv"
"git.kirsle.net/apps/doodle/balance"
"git.kirsle.net/apps/doodle/doodads"
"git.kirsle.net/apps/doodle/enum"
"git.kirsle.net/apps/doodle/events"
"git.kirsle.net/apps/doodle/level"
"git.kirsle.net/apps/doodle/pkg/userdir"
"git.kirsle.net/apps/doodle/render"
"git.kirsle.net/apps/doodle/ui"
"git.kirsle.net/apps/doodle/uix"
)
Draw Actors Embedded in Levels in Edit Mode Add the JSON format for embedding Actors (Doodad instances) inside of a Level. I made a test map that manually inserted a couple of actors. Actors are given to the Canvas responsible for the Level via the function `InstallActors()`. So it means you'll call LoadLevel and then InstallActors to hook everything up. The Canvas creates sub-Canvas widgets from each Actor. After drawing the main level geometry from the Canvas.Chunker, it calls the drawActors() function which does the same but for Actors. Levels keep a global map of all Actors that exist. For any Actors that are visible within the Viewport, their sub-Canvas widgets are presented appropriately on top of the parent Canvas. In case their sub-Canvas overlaps the parent's boundaries, their sub-Canvas is resized and moved appropriately. - Allow the MainWindow to be resized at run time, and the UI recalculates its sizing and position. - Made the in-game Shell properties editable via environment variables. The kirsle.env file sets a blue and pink color scheme. - Begin the ground work for Levels and Doodads to embed files inside their data via the level.FileSystem type. - UI: Labels can now contain line break characters. It will appropriately render multiple lines of render.Text and take into account the proper BoxSize to contain them all. - Add environment variable DOODLE_DEBUG_ALL=true that will turn on ALL debug overlay and visualization options. - Add debug overlay to "tag" each Canvas widget with some of its details, like its Name and World Position. Can be enabled with the environment variable DEBUG_CANVAS_LABEL=true - Improved the FPS debug overlay to show in labeled columns and multiple colors, with easy ability to add new data points to it.
2018-10-19 20:31:58 +00:00
// Width of the panel frame.
var paletteWidth int32 = 150
// EditorUI manages the user interface for the Editor Scene.
type EditorUI struct {
d *Doodle
Scene *EditorScene
// Variables
WIP Texture Caching NOTICE: Chunk size set to 100 for visual testing! NOTICE: guitest references a bmp file that isn't checked in! BUGS REMAINING: - When scrolling the level in Edit Mode, some of the chunks will pop out of existence randomly. - When clicking-dragging to draw in Edit Mode, if the scroll position is not at 0,0 then the pixels drawn will be offset from the cursor. - These are to do with the Scroll position and chunk coordinate calc functions probably. Implements a texture caching interface to stop redrawing everything pixel by pixel on every frame. The texture caching workflow is briefly: - The uix.Canvas widget's Present() function iterates over the list of Chunk Coordinates that are visible inside of the current viewport (i.e. viewable on screen) - For each Chunk: - Make it render and/or return its cached Texture object. - Work out how much of the Chunk will be visible and how to crop the boxes for the Copy() - Copy the cached Texture instead of drawing all the pixels every time like we were doing before. - The Chunk.Texture() function that returns said Texture: - It calls Chunk.ToBitmap() to save a bitmap on disk. - It calls Engine.NewBitmap() to get a Texture it can hang onto. - It hangs onto the Texture and returns it on future calls. - Any call to Set() or Delete() a pixel will invalidate the cache (mark the Chunk "dirty") and Texture() will rebuild next call. The interface `render.Texturer` provides a way for rendering backends (SDL2, OpenGL) to transport a "texture" of their own kind without exposing the type details to the user. The interface `render.Engine` adds two new methods: * NewBitmap(filename string) (Texturer, error) * Copy(t Texturer, src, dst Rect) NewBitmap should open a bitmap image on disk and return it wrapped in a Texturer (really it's an SDL2 Texture). This is for caching purposes. Next the Copy() function blits the texture onto the screen renderer using the source and destination rectangles. The uix.Canvas widget orchestrates the caching for the drawing it's responsible for. It queries which chunks are viewable in the Canvas viewport (scroll and bounding boxes), has each chunk render out their entire bitmap image to then cache them as SDL textures and then only _those_ need to be copied out to the renderer each frame. The frame rate now sits at a decent 60 FPS even when the drawing gets messy and full of lines. Each unique version of each chunk needs to render only one time and then it's a fast copy operation for future ticks. Other changes: - Chunker now assigns each Chunk what their coordinate and size are, so that the chunk can self reference that information. This info is considered read-only but that isn't really enforced. - Add Chunker.IterViewportChunks() that returns a channel of Chunk Coordinates that are visible in your viewport, rather than iterating over all of the pixels in all of those chunks. - Add Chunk.ToBitmap(filename) that causes a Chunk to render its pixels to a bitmap image on disk. SDL2 can natively speak Bitmaps for texture caching. Currently these go to files in /tmp but will soon go into your $XDG_CACHE_FOLDER instead. - Add Chunk.Texture() that causes a Chunk to render and then return a cached bitmap texture of the pixels it's responsible for. The texture is cached until the Chunk is next modified with Set() or Delete(). - UI: add an Image widget that currently just shows a bitmap image. It was the first test for caching bitmap images for efficiency. Can show any *.bmp file on disk! - Editor UI: make the StatusBar boxes dynamically build from an array of string pointers to make it SUPER EASY to add/remove labels.
2018-10-18 03:52:14 +00:00
StatusBoxes []*string
StatusMouseText string
StatusPaletteText string
StatusFilenameText string
WIP Texture Caching NOTICE: Chunk size set to 100 for visual testing! NOTICE: guitest references a bmp file that isn't checked in! BUGS REMAINING: - When scrolling the level in Edit Mode, some of the chunks will pop out of existence randomly. - When clicking-dragging to draw in Edit Mode, if the scroll position is not at 0,0 then the pixels drawn will be offset from the cursor. - These are to do with the Scroll position and chunk coordinate calc functions probably. Implements a texture caching interface to stop redrawing everything pixel by pixel on every frame. The texture caching workflow is briefly: - The uix.Canvas widget's Present() function iterates over the list of Chunk Coordinates that are visible inside of the current viewport (i.e. viewable on screen) - For each Chunk: - Make it render and/or return its cached Texture object. - Work out how much of the Chunk will be visible and how to crop the boxes for the Copy() - Copy the cached Texture instead of drawing all the pixels every time like we were doing before. - The Chunk.Texture() function that returns said Texture: - It calls Chunk.ToBitmap() to save a bitmap on disk. - It calls Engine.NewBitmap() to get a Texture it can hang onto. - It hangs onto the Texture and returns it on future calls. - Any call to Set() or Delete() a pixel will invalidate the cache (mark the Chunk "dirty") and Texture() will rebuild next call. The interface `render.Texturer` provides a way for rendering backends (SDL2, OpenGL) to transport a "texture" of their own kind without exposing the type details to the user. The interface `render.Engine` adds two new methods: * NewBitmap(filename string) (Texturer, error) * Copy(t Texturer, src, dst Rect) NewBitmap should open a bitmap image on disk and return it wrapped in a Texturer (really it's an SDL2 Texture). This is for caching purposes. Next the Copy() function blits the texture onto the screen renderer using the source and destination rectangles. The uix.Canvas widget orchestrates the caching for the drawing it's responsible for. It queries which chunks are viewable in the Canvas viewport (scroll and bounding boxes), has each chunk render out their entire bitmap image to then cache them as SDL textures and then only _those_ need to be copied out to the renderer each frame. The frame rate now sits at a decent 60 FPS even when the drawing gets messy and full of lines. Each unique version of each chunk needs to render only one time and then it's a fast copy operation for future ticks. Other changes: - Chunker now assigns each Chunk what their coordinate and size are, so that the chunk can self reference that information. This info is considered read-only but that isn't really enforced. - Add Chunker.IterViewportChunks() that returns a channel of Chunk Coordinates that are visible in your viewport, rather than iterating over all of the pixels in all of those chunks. - Add Chunk.ToBitmap(filename) that causes a Chunk to render its pixels to a bitmap image on disk. SDL2 can natively speak Bitmaps for texture caching. Currently these go to files in /tmp but will soon go into your $XDG_CACHE_FOLDER instead. - Add Chunk.Texture() that causes a Chunk to render and then return a cached bitmap texture of the pixels it's responsible for. The texture is cached until the Chunk is next modified with Set() or Delete(). - UI: add an Image widget that currently just shows a bitmap image. It was the first test for caching bitmap images for efficiency. Can show any *.bmp file on disk! - Editor UI: make the StatusBar boxes dynamically build from an array of string pointers to make it SUPER EASY to add/remove labels.
2018-10-18 03:52:14 +00:00
StatusScrollText string
selectedSwatch string // name of selected swatch in palette
cursor render.Point // remember the cursor position in Loop
// Widgets
Supervisor *ui.Supervisor
Canvas *uix.Canvas
Workspace *ui.Frame
MenuBar *ui.Frame
StatusBar *ui.Frame
// Palette window.
Palette *ui.Window
PaletteTab *ui.Frame
DoodadTab *ui.Frame
// Draggable Doodad canvas.
DraggableActor *DraggableActor
// Palette variables.
paletteTab string // selected tab, Palette or Doodads
}
// NewEditorUI initializes the Editor UI.
func NewEditorUI(d *Doodle, s *EditorScene) *EditorUI {
u := &EditorUI{
d: d,
Scene: s,
Supervisor: ui.NewSupervisor(),
StatusMouseText: "Cursor: (waiting)",
StatusPaletteText: "Swatch: <none>",
StatusFilenameText: "Filename: <none>",
WIP Texture Caching NOTICE: Chunk size set to 100 for visual testing! NOTICE: guitest references a bmp file that isn't checked in! BUGS REMAINING: - When scrolling the level in Edit Mode, some of the chunks will pop out of existence randomly. - When clicking-dragging to draw in Edit Mode, if the scroll position is not at 0,0 then the pixels drawn will be offset from the cursor. - These are to do with the Scroll position and chunk coordinate calc functions probably. Implements a texture caching interface to stop redrawing everything pixel by pixel on every frame. The texture caching workflow is briefly: - The uix.Canvas widget's Present() function iterates over the list of Chunk Coordinates that are visible inside of the current viewport (i.e. viewable on screen) - For each Chunk: - Make it render and/or return its cached Texture object. - Work out how much of the Chunk will be visible and how to crop the boxes for the Copy() - Copy the cached Texture instead of drawing all the pixels every time like we were doing before. - The Chunk.Texture() function that returns said Texture: - It calls Chunk.ToBitmap() to save a bitmap on disk. - It calls Engine.NewBitmap() to get a Texture it can hang onto. - It hangs onto the Texture and returns it on future calls. - Any call to Set() or Delete() a pixel will invalidate the cache (mark the Chunk "dirty") and Texture() will rebuild next call. The interface `render.Texturer` provides a way for rendering backends (SDL2, OpenGL) to transport a "texture" of their own kind without exposing the type details to the user. The interface `render.Engine` adds two new methods: * NewBitmap(filename string) (Texturer, error) * Copy(t Texturer, src, dst Rect) NewBitmap should open a bitmap image on disk and return it wrapped in a Texturer (really it's an SDL2 Texture). This is for caching purposes. Next the Copy() function blits the texture onto the screen renderer using the source and destination rectangles. The uix.Canvas widget orchestrates the caching for the drawing it's responsible for. It queries which chunks are viewable in the Canvas viewport (scroll and bounding boxes), has each chunk render out their entire bitmap image to then cache them as SDL textures and then only _those_ need to be copied out to the renderer each frame. The frame rate now sits at a decent 60 FPS even when the drawing gets messy and full of lines. Each unique version of each chunk needs to render only one time and then it's a fast copy operation for future ticks. Other changes: - Chunker now assigns each Chunk what their coordinate and size are, so that the chunk can self reference that information. This info is considered read-only but that isn't really enforced. - Add Chunker.IterViewportChunks() that returns a channel of Chunk Coordinates that are visible in your viewport, rather than iterating over all of the pixels in all of those chunks. - Add Chunk.ToBitmap(filename) that causes a Chunk to render its pixels to a bitmap image on disk. SDL2 can natively speak Bitmaps for texture caching. Currently these go to files in /tmp but will soon go into your $XDG_CACHE_FOLDER instead. - Add Chunk.Texture() that causes a Chunk to render and then return a cached bitmap texture of the pixels it's responsible for. The texture is cached until the Chunk is next modified with Set() or Delete(). - UI: add an Image widget that currently just shows a bitmap image. It was the first test for caching bitmap images for efficiency. Can show any *.bmp file on disk! - Editor UI: make the StatusBar boxes dynamically build from an array of string pointers to make it SUPER EASY to add/remove labels.
2018-10-18 03:52:14 +00:00
StatusScrollText: "Hello world",
}
// Bind the StatusBoxes arrays to the text variables.
u.StatusBoxes = []*string{
&u.StatusMouseText,
&u.StatusPaletteText,
&u.StatusFilenameText,
&u.StatusScrollText,
}
u.Canvas = u.SetupCanvas(d)
u.MenuBar = u.SetupMenuBar(d)
u.StatusBar = u.SetupStatusBar(d)
u.Palette = u.SetupPalette(d)
u.Workspace = u.SetupWorkspace(d) // important that this is last!
Draw Actors Embedded in Levels in Edit Mode Add the JSON format for embedding Actors (Doodad instances) inside of a Level. I made a test map that manually inserted a couple of actors. Actors are given to the Canvas responsible for the Level via the function `InstallActors()`. So it means you'll call LoadLevel and then InstallActors to hook everything up. The Canvas creates sub-Canvas widgets from each Actor. After drawing the main level geometry from the Canvas.Chunker, it calls the drawActors() function which does the same but for Actors. Levels keep a global map of all Actors that exist. For any Actors that are visible within the Viewport, their sub-Canvas widgets are presented appropriately on top of the parent Canvas. In case their sub-Canvas overlaps the parent's boundaries, their sub-Canvas is resized and moved appropriately. - Allow the MainWindow to be resized at run time, and the UI recalculates its sizing and position. - Made the in-game Shell properties editable via environment variables. The kirsle.env file sets a blue and pink color scheme. - Begin the ground work for Levels and Doodads to embed files inside their data via the level.FileSystem type. - UI: Labels can now contain line break characters. It will appropriately render multiple lines of render.Text and take into account the proper BoxSize to contain them all. - Add environment variable DOODLE_DEBUG_ALL=true that will turn on ALL debug overlay and visualization options. - Add debug overlay to "tag" each Canvas widget with some of its details, like its Name and World Position. Can be enabled with the environment variable DEBUG_CANVAS_LABEL=true - Improved the FPS debug overlay to show in labeled columns and multiple colors, with easy ability to add new data points to it.
2018-10-19 20:31:58 +00:00
u.Resized(d)
// Position the Canvas inside the frame.
u.Workspace.Pack(u.Canvas, ui.Pack{
Anchor: ui.N,
})
u.Workspace.Compute(d.Engine)
u.ExpandCanvas(d.Engine)
// Select the first swatch of the palette.
if u.Canvas.Palette != nil && u.Canvas.Palette.ActiveSwatch != nil {
u.selectedSwatch = u.Canvas.Palette.ActiveSwatch.Name
}
return u
}
Draw Actors Embedded in Levels in Edit Mode Add the JSON format for embedding Actors (Doodad instances) inside of a Level. I made a test map that manually inserted a couple of actors. Actors are given to the Canvas responsible for the Level via the function `InstallActors()`. So it means you'll call LoadLevel and then InstallActors to hook everything up. The Canvas creates sub-Canvas widgets from each Actor. After drawing the main level geometry from the Canvas.Chunker, it calls the drawActors() function which does the same but for Actors. Levels keep a global map of all Actors that exist. For any Actors that are visible within the Viewport, their sub-Canvas widgets are presented appropriately on top of the parent Canvas. In case their sub-Canvas overlaps the parent's boundaries, their sub-Canvas is resized and moved appropriately. - Allow the MainWindow to be resized at run time, and the UI recalculates its sizing and position. - Made the in-game Shell properties editable via environment variables. The kirsle.env file sets a blue and pink color scheme. - Begin the ground work for Levels and Doodads to embed files inside their data via the level.FileSystem type. - UI: Labels can now contain line break characters. It will appropriately render multiple lines of render.Text and take into account the proper BoxSize to contain them all. - Add environment variable DOODLE_DEBUG_ALL=true that will turn on ALL debug overlay and visualization options. - Add debug overlay to "tag" each Canvas widget with some of its details, like its Name and World Position. Can be enabled with the environment variable DEBUG_CANVAS_LABEL=true - Improved the FPS debug overlay to show in labeled columns and multiple colors, with easy ability to add new data points to it.
2018-10-19 20:31:58 +00:00
// Resized handles the window being resized so we can recompute the widgets.
func (u *EditorUI) Resized(d *Doodle) {
// Menu Bar frame.
{
u.MenuBar.Configure(ui.Config{
Width: int32(d.width),
Background: render.Black,
})
u.MenuBar.Compute(d.Engine)
}
// Status Bar.
{
u.StatusBar.Configure(ui.Config{
Width: int32(d.width),
})
u.StatusBar.MoveTo(render.Point{
X: 0,
Y: int32(d.height) - u.StatusBar.Size().H,
})
u.StatusBar.Compute(d.Engine)
}
// Palette panel.
{
u.Palette.Configure(ui.Config{
Width: paletteWidth,
Height: int32(u.d.height) - u.StatusBar.Size().H,
})
u.Palette.MoveTo(render.NewPoint(
int32(u.d.width)-u.Palette.BoxSize().W,
u.MenuBar.BoxSize().H,
))
u.Palette.Compute(d.Engine)
}
// Position the workspace around with the other widgets.
{
frame := u.Workspace
frame.MoveTo(render.NewPoint(
0,
u.MenuBar.Size().H,
))
frame.Resize(render.NewRect(
int32(d.width)-u.Palette.Size().W,
int32(d.height)-u.MenuBar.Size().H-u.StatusBar.Size().H,
))
frame.Compute(d.Engine)
u.ExpandCanvas(d.Engine)
}
}
// Loop to process events and update the UI.
func (u *EditorUI) Loop(ev *events.State) error {
u.cursor = render.NewPoint(ev.CursorX.Now, ev.CursorY.Now)
// Loop the UI and see whether we're told to stop event propagation.
var stopPropagation bool
if err := u.Supervisor.Loop(ev); err != nil {
if err == ui.ErrStopPropagation {
stopPropagation = true
} else {
return err
}
}
// Update status bar labels.
Draw Actors Embedded in Levels in Edit Mode Add the JSON format for embedding Actors (Doodad instances) inside of a Level. I made a test map that manually inserted a couple of actors. Actors are given to the Canvas responsible for the Level via the function `InstallActors()`. So it means you'll call LoadLevel and then InstallActors to hook everything up. The Canvas creates sub-Canvas widgets from each Actor. After drawing the main level geometry from the Canvas.Chunker, it calls the drawActors() function which does the same but for Actors. Levels keep a global map of all Actors that exist. For any Actors that are visible within the Viewport, their sub-Canvas widgets are presented appropriately on top of the parent Canvas. In case their sub-Canvas overlaps the parent's boundaries, their sub-Canvas is resized and moved appropriately. - Allow the MainWindow to be resized at run time, and the UI recalculates its sizing and position. - Made the in-game Shell properties editable via environment variables. The kirsle.env file sets a blue and pink color scheme. - Begin the ground work for Levels and Doodads to embed files inside their data via the level.FileSystem type. - UI: Labels can now contain line break characters. It will appropriately render multiple lines of render.Text and take into account the proper BoxSize to contain them all. - Add environment variable DOODLE_DEBUG_ALL=true that will turn on ALL debug overlay and visualization options. - Add debug overlay to "tag" each Canvas widget with some of its details, like its Name and World Position. Can be enabled with the environment variable DEBUG_CANVAS_LABEL=true - Improved the FPS debug overlay to show in labeled columns and multiple colors, with easy ability to add new data points to it.
2018-10-19 20:31:58 +00:00
{
debugWorldIndex = u.Canvas.WorldIndexAt(u.cursor)
u.StatusMouseText = fmt.Sprintf("Rel:(%d,%d) Abs:(%s)",
Draw Actors Embedded in Levels in Edit Mode Add the JSON format for embedding Actors (Doodad instances) inside of a Level. I made a test map that manually inserted a couple of actors. Actors are given to the Canvas responsible for the Level via the function `InstallActors()`. So it means you'll call LoadLevel and then InstallActors to hook everything up. The Canvas creates sub-Canvas widgets from each Actor. After drawing the main level geometry from the Canvas.Chunker, it calls the drawActors() function which does the same but for Actors. Levels keep a global map of all Actors that exist. For any Actors that are visible within the Viewport, their sub-Canvas widgets are presented appropriately on top of the parent Canvas. In case their sub-Canvas overlaps the parent's boundaries, their sub-Canvas is resized and moved appropriately. - Allow the MainWindow to be resized at run time, and the UI recalculates its sizing and position. - Made the in-game Shell properties editable via environment variables. The kirsle.env file sets a blue and pink color scheme. - Begin the ground work for Levels and Doodads to embed files inside their data via the level.FileSystem type. - UI: Labels can now contain line break characters. It will appropriately render multiple lines of render.Text and take into account the proper BoxSize to contain them all. - Add environment variable DOODLE_DEBUG_ALL=true that will turn on ALL debug overlay and visualization options. - Add debug overlay to "tag" each Canvas widget with some of its details, like its Name and World Position. Can be enabled with the environment variable DEBUG_CANVAS_LABEL=true - Improved the FPS debug overlay to show in labeled columns and multiple colors, with easy ability to add new data points to it.
2018-10-19 20:31:58 +00:00
ev.CursorX.Now,
ev.CursorY.Now,
debugWorldIndex,
)
u.StatusPaletteText = fmt.Sprintf("%s Tool",
u.Canvas.Tool,
)
u.StatusScrollText = fmt.Sprintf("Scroll: %s Viewport: %s",
u.Canvas.Scroll,
u.Canvas.Viewport(),
)
// Statusbar filename label.
filename := "untitled.map"
fileType := "Level"
if u.Scene.filename != "" {
filename = u.Scene.filename
}
if u.Scene.DrawingType == enum.DoodadDrawing {
fileType = "Doodad"
}
u.StatusFilenameText = fmt.Sprintf("Filename: %s (%s)",
filepath.Base(filename),
fileType,
)
Draw Actors Embedded in Levels in Edit Mode Add the JSON format for embedding Actors (Doodad instances) inside of a Level. I made a test map that manually inserted a couple of actors. Actors are given to the Canvas responsible for the Level via the function `InstallActors()`. So it means you'll call LoadLevel and then InstallActors to hook everything up. The Canvas creates sub-Canvas widgets from each Actor. After drawing the main level geometry from the Canvas.Chunker, it calls the drawActors() function which does the same but for Actors. Levels keep a global map of all Actors that exist. For any Actors that are visible within the Viewport, their sub-Canvas widgets are presented appropriately on top of the parent Canvas. In case their sub-Canvas overlaps the parent's boundaries, their sub-Canvas is resized and moved appropriately. - Allow the MainWindow to be resized at run time, and the UI recalculates its sizing and position. - Made the in-game Shell properties editable via environment variables. The kirsle.env file sets a blue and pink color scheme. - Begin the ground work for Levels and Doodads to embed files inside their data via the level.FileSystem type. - UI: Labels can now contain line break characters. It will appropriately render multiple lines of render.Text and take into account the proper BoxSize to contain them all. - Add environment variable DOODLE_DEBUG_ALL=true that will turn on ALL debug overlay and visualization options. - Add debug overlay to "tag" each Canvas widget with some of its details, like its Name and World Position. Can be enabled with the environment variable DEBUG_CANVAS_LABEL=true - Improved the FPS debug overlay to show in labeled columns and multiple colors, with easy ability to add new data points to it.
2018-10-19 20:31:58 +00:00
}
// Recompute widgets.
u.MenuBar.Compute(u.d.Engine)
u.StatusBar.Compute(u.d.Engine)
u.Palette.Compute(u.d.Engine)
// Only forward events to the Canvas if the UI hasn't stopped them.
if !stopPropagation {
u.Canvas.Loop(ev)
}
return nil
}
// Present the UI to the screen.
func (u *EditorUI) Present(e render.Engine) {
// TODO: if I don't Compute() the palette window, then, whenever the dev console
// is open the window will blank out its contents leaving only the outermost Frame.
// The title bar and borders are gone. But other UI widgets don't do this.
// FIXME: Scene interface should have a separate ComputeUI() from Loop()?
u.Palette.Compute(u.d.Engine)
u.Palette.Present(e, u.Palette.Point())
u.MenuBar.Present(e, u.MenuBar.Point())
u.StatusBar.Present(e, u.StatusBar.Point())
u.Workspace.Present(e, u.Workspace.Point())
// Are we dragging a Doodad canvas?
if u.Supervisor.IsDragging() {
if actor := u.DraggableActor; actor != nil {
var size = actor.canvas.Size()
actor.canvas.Present(u.d.Engine, render.NewPoint(
u.cursor.X-(size.W/2),
u.cursor.Y-(size.H/2),
))
}
}
}
// SetupWorkspace configures the main Workspace frame that takes up the full
// window apart from toolbars. The Workspace has a single child element, the
// Canvas, so it can easily full-screen it or center it for Doodad editing.
func (u *EditorUI) SetupWorkspace(d *Doodle) *ui.Frame {
frame := ui.NewFrame("Workspace")
return frame
}
// SetupCanvas configures the main drawing canvas in the editor.
func (u *EditorUI) SetupCanvas(d *Doodle) *uix.Canvas {
drawing := uix.NewCanvas(balance.ChunkSize, true)
WIP Texture Caching NOTICE: Chunk size set to 100 for visual testing! NOTICE: guitest references a bmp file that isn't checked in! BUGS REMAINING: - When scrolling the level in Edit Mode, some of the chunks will pop out of existence randomly. - When clicking-dragging to draw in Edit Mode, if the scroll position is not at 0,0 then the pixels drawn will be offset from the cursor. - These are to do with the Scroll position and chunk coordinate calc functions probably. Implements a texture caching interface to stop redrawing everything pixel by pixel on every frame. The texture caching workflow is briefly: - The uix.Canvas widget's Present() function iterates over the list of Chunk Coordinates that are visible inside of the current viewport (i.e. viewable on screen) - For each Chunk: - Make it render and/or return its cached Texture object. - Work out how much of the Chunk will be visible and how to crop the boxes for the Copy() - Copy the cached Texture instead of drawing all the pixels every time like we were doing before. - The Chunk.Texture() function that returns said Texture: - It calls Chunk.ToBitmap() to save a bitmap on disk. - It calls Engine.NewBitmap() to get a Texture it can hang onto. - It hangs onto the Texture and returns it on future calls. - Any call to Set() or Delete() a pixel will invalidate the cache (mark the Chunk "dirty") and Texture() will rebuild next call. The interface `render.Texturer` provides a way for rendering backends (SDL2, OpenGL) to transport a "texture" of their own kind without exposing the type details to the user. The interface `render.Engine` adds two new methods: * NewBitmap(filename string) (Texturer, error) * Copy(t Texturer, src, dst Rect) NewBitmap should open a bitmap image on disk and return it wrapped in a Texturer (really it's an SDL2 Texture). This is for caching purposes. Next the Copy() function blits the texture onto the screen renderer using the source and destination rectangles. The uix.Canvas widget orchestrates the caching for the drawing it's responsible for. It queries which chunks are viewable in the Canvas viewport (scroll and bounding boxes), has each chunk render out their entire bitmap image to then cache them as SDL textures and then only _those_ need to be copied out to the renderer each frame. The frame rate now sits at a decent 60 FPS even when the drawing gets messy and full of lines. Each unique version of each chunk needs to render only one time and then it's a fast copy operation for future ticks. Other changes: - Chunker now assigns each Chunk what their coordinate and size are, so that the chunk can self reference that information. This info is considered read-only but that isn't really enforced. - Add Chunker.IterViewportChunks() that returns a channel of Chunk Coordinates that are visible in your viewport, rather than iterating over all of the pixels in all of those chunks. - Add Chunk.ToBitmap(filename) that causes a Chunk to render its pixels to a bitmap image on disk. SDL2 can natively speak Bitmaps for texture caching. Currently these go to files in /tmp but will soon go into your $XDG_CACHE_FOLDER instead. - Add Chunk.Texture() that causes a Chunk to render and then return a cached bitmap texture of the pixels it's responsible for. The texture is cached until the Chunk is next modified with Set() or Delete(). - UI: add an Image widget that currently just shows a bitmap image. It was the first test for caching bitmap images for efficiency. Can show any *.bmp file on disk! - Editor UI: make the StatusBar boxes dynamically build from an array of string pointers to make it SUPER EASY to add/remove labels.
2018-10-18 03:52:14 +00:00
drawing.Name = "edit-canvas"
drawing.Palette = level.DefaultPalette()
drawing.SetBackground(render.White)
if len(drawing.Palette.Swatches) > 0 {
drawing.SetSwatch(drawing.Palette.Swatches[0])
}
// Handle the Canvas deleting our actors in edit mode.
drawing.OnDeleteActors = func(actors []*level.Actor) {
if u.Scene.Level != nil {
for _, actor := range actors {
u.Scene.Level.Actors.Remove(actor)
}
drawing.InstallActors(u.Scene.Level.Actors)
}
}
// A drag event initiated inside the Canvas. This happens in the ActorTool
// mode when you click an existing Doodad and it "pops" out of the canvas
// and onto the cursor to be repositioned.
drawing.OnDragStart = func(filename string) {
doodad, err := doodads.LoadJSON(userdir.DoodadPath(filename))
if err != nil {
log.Error("drawing.OnDragStart: %s", err.Error())
}
u.startDragActor(doodad)
}
// Set up the drop handler for draggable doodads.
// NOTE: The drag event begins at editor_ui_doodad.go when configuring the
// Doodad Palette buttons.
drawing.Handle(ui.Drop, func(e render.Point) {
log.Info("Drawing canvas has received a drop!")
var P = ui.AbsolutePosition(drawing)
// Was it an actor from the Doodad Palette?
if actor := u.DraggableActor; actor != nil {
log.Info("Actor is a %s", actor.doodad.Filename)
if u.Scene.Level == nil {
u.d.Flash("Can't drop doodads onto doodad drawings!")
return
}
size := actor.canvas.Size()
u.Scene.Level.Actors.Add(&level.Actor{
// Uncenter the drawing from the cursor.
Point: render.Point{
X: (u.cursor.X - drawing.Scroll.X - (size.W / 2)) - P.X,
Y: (u.cursor.Y - drawing.Scroll.Y - (size.H / 2)) - P.Y,
},
Filename: actor.doodad.Filename,
})
drawing.InstallActors(u.Scene.Level.Actors)
}
})
u.Supervisor.Add(drawing)
return drawing
}
// ExpandCanvas manually expands the Canvas to fill the frame, to work around
// UI packing bugs. Ideally I would use `Expand: true` when packing the Canvas
// in its frame, but that would artificially expand the Canvas also when it
// _wanted_ to be smaller, as in Doodad Editing Mode.
func (u *EditorUI) ExpandCanvas(e render.Engine) {
Draw Actors Embedded in Levels in Edit Mode Add the JSON format for embedding Actors (Doodad instances) inside of a Level. I made a test map that manually inserted a couple of actors. Actors are given to the Canvas responsible for the Level via the function `InstallActors()`. So it means you'll call LoadLevel and then InstallActors to hook everything up. The Canvas creates sub-Canvas widgets from each Actor. After drawing the main level geometry from the Canvas.Chunker, it calls the drawActors() function which does the same but for Actors. Levels keep a global map of all Actors that exist. For any Actors that are visible within the Viewport, their sub-Canvas widgets are presented appropriately on top of the parent Canvas. In case their sub-Canvas overlaps the parent's boundaries, their sub-Canvas is resized and moved appropriately. - Allow the MainWindow to be resized at run time, and the UI recalculates its sizing and position. - Made the in-game Shell properties editable via environment variables. The kirsle.env file sets a blue and pink color scheme. - Begin the ground work for Levels and Doodads to embed files inside their data via the level.FileSystem type. - UI: Labels can now contain line break characters. It will appropriately render multiple lines of render.Text and take into account the proper BoxSize to contain them all. - Add environment variable DOODLE_DEBUG_ALL=true that will turn on ALL debug overlay and visualization options. - Add debug overlay to "tag" each Canvas widget with some of its details, like its Name and World Position. Can be enabled with the environment variable DEBUG_CANVAS_LABEL=true - Improved the FPS debug overlay to show in labeled columns and multiple colors, with easy ability to add new data points to it.
2018-10-19 20:31:58 +00:00
if u.Scene.DrawingType == enum.LevelDrawing {
u.Canvas.Resize(u.Workspace.Size())
} else {
// Size is managed externally.
}
u.Workspace.Compute(e)
}
// SetupMenuBar sets up the menu bar.
func (u *EditorUI) SetupMenuBar(d *Doodle) *ui.Frame {
frame := ui.NewFrame("MenuBar")
type menuButton struct {
Text string
Click func(render.Point)
}
buttons := []menuButton{
menuButton{
Text: "New Level",
Click: func(render.Point) {
d.NewMap()
},
},
menuButton{
Text: "New Doodad",
Click: func(render.Point) {
d.Prompt("Doodad size [100]>", func(answer string) {
size := balance.DoodadSize
if answer != "" {
i, err := strconv.Atoi(answer)
if err != nil {
d.Flash("Error: Doodad size must be a number.")
return
}
size = i
}
d.NewDoodad(size)
})
},
},
menuButton{
Text: "Save",
Click: func(render.Point) {
var saveFunc func(filename string)
switch u.Scene.DrawingType {
case enum.LevelDrawing:
saveFunc = func(filename string) {
if err := u.Scene.SaveLevel(filename); err != nil {
d.Flash("Error: %s", err)
} else {
d.Flash("Saved level: %s", filename)
}
}
case enum.DoodadDrawing:
saveFunc = func(filename string) {
if err := u.Scene.SaveDoodad(filename); err != nil {
d.Flash("Error: %s", err)
} else {
d.Flash("Saved doodad: %s", filename)
}
}
default:
d.Flash("Error: Scene.DrawingType is not a valid type")
}
if u.Scene.filename != "" {
saveFunc(u.Scene.filename)
} else {
d.Prompt("Save filename>", func(answer string) {
if answer != "" {
saveFunc(answer)
}
})
}
},
},
menuButton{
Text: "Save as...",
Click: func(render.Point) {
d.Prompt("Save as filename>", func(answer string) {
if answer != "" {
u.Scene.SaveLevel("./maps/" + answer) // TODO: maps path
d.Flash("Saved: %s", answer)
}
})
},
},
menuButton{
Text: "Load",
Click: func(render.Point) {
d.Prompt("Open filename>", func(answer string) {
if answer != "" {
u.d.EditDrawing("./maps/" + answer) // TODO: maps path
}
})
},
},
}
for _, btn := range buttons {
w := ui.NewButton(btn.Text, ui.NewLabel(ui.Label{
Text: btn.Text,
Font: balance.MenuFont,
}))
w.Configure(ui.Config{
BorderSize: 1,
OutlineSize: 0,
})
w.Handle(ui.MouseUp, btn.Click)
u.Supervisor.Add(w)
frame.Pack(w, ui.Pack{
Anchor: ui.W,
PadX: 1,
})
}
frame.Compute(d.Engine)
return frame
}
// SetupPalette sets up the palette panel.
func (u *EditorUI) SetupPalette(d *Doodle) *ui.Window {
window := ui.NewWindow("Palette")
window.ConfigureTitle(balance.TitleConfig)
window.TitleBar().Font = balance.TitleFont
window.Configure(ui.Config{
Background: balance.WindowBackground,
BorderColor: balance.WindowBorder,
})
// Frame that holds the tab buttons in Level Edit mode.
tabFrame := ui.NewFrame("Palette Tabs")
for _, name := range []string{"Palette", "Doodads"} {
if u.paletteTab == "" {
u.paletteTab = name
}
tab := ui.NewRadioButton("Palette Tab", &u.paletteTab, name, ui.NewLabel(ui.Label{
Text: name,
}))
tab.Handle(ui.Click, func(p render.Point) {
if u.paletteTab == "Palette" {
u.Canvas.Tool = uix.PencilTool
u.PaletteTab.Show()
u.DoodadTab.Hide()
} else {
u.Canvas.Tool = uix.ActorTool
u.PaletteTab.Hide()
u.DoodadTab.Show()
}
window.Compute(d.Engine)
})
u.Supervisor.Add(tab)
tabFrame.Pack(tab, ui.Pack{
Anchor: ui.W,
Fill: true,
Expand: true,
})
}
window.Pack(tabFrame, ui.Pack{
Anchor: ui.N,
Fill: true,
PadY: 4,
})
// Only show the tab frame in Level drawing mode!
if u.Scene.DrawingType != enum.LevelDrawing {
tabFrame.Hide()
}
// Doodad frame.
{
frame, err := u.setupDoodadFrame(d.Engine, window)
if err != nil {
d.Flash(err.Error())
}
// Even if there was an error (userdir.ListDoodads couldn't read the
// config folder on disk or whatever) the Frame is still valid but
// empty, which is still the intended behavior.
u.DoodadTab = frame
u.DoodadTab.Hide()
window.Pack(u.DoodadTab, ui.Pack{
Anchor: ui.N,
Fill: true,
})
}
// Color Palette Frame.
u.PaletteTab = u.setupPaletteFrame(window)
window.Pack(u.PaletteTab, ui.Pack{
Anchor: ui.N,
Fill: true,
})
return window
}
// SetupStatusBar sets up the status bar widget along the bottom of the window.
func (u *EditorUI) SetupStatusBar(d *Doodle) *ui.Frame {
frame := ui.NewFrame("Status Bar")
frame.Configure(ui.Config{
BorderStyle: ui.BorderRaised,
Background: render.Grey,
BorderSize: 2,
})
style := ui.Config{
Background: render.Grey,
BorderStyle: ui.BorderSunken,
BorderColor: render.Grey,
BorderSize: 1,
}
WIP Texture Caching NOTICE: Chunk size set to 100 for visual testing! NOTICE: guitest references a bmp file that isn't checked in! BUGS REMAINING: - When scrolling the level in Edit Mode, some of the chunks will pop out of existence randomly. - When clicking-dragging to draw in Edit Mode, if the scroll position is not at 0,0 then the pixels drawn will be offset from the cursor. - These are to do with the Scroll position and chunk coordinate calc functions probably. Implements a texture caching interface to stop redrawing everything pixel by pixel on every frame. The texture caching workflow is briefly: - The uix.Canvas widget's Present() function iterates over the list of Chunk Coordinates that are visible inside of the current viewport (i.e. viewable on screen) - For each Chunk: - Make it render and/or return its cached Texture object. - Work out how much of the Chunk will be visible and how to crop the boxes for the Copy() - Copy the cached Texture instead of drawing all the pixels every time like we were doing before. - The Chunk.Texture() function that returns said Texture: - It calls Chunk.ToBitmap() to save a bitmap on disk. - It calls Engine.NewBitmap() to get a Texture it can hang onto. - It hangs onto the Texture and returns it on future calls. - Any call to Set() or Delete() a pixel will invalidate the cache (mark the Chunk "dirty") and Texture() will rebuild next call. The interface `render.Texturer` provides a way for rendering backends (SDL2, OpenGL) to transport a "texture" of their own kind without exposing the type details to the user. The interface `render.Engine` adds two new methods: * NewBitmap(filename string) (Texturer, error) * Copy(t Texturer, src, dst Rect) NewBitmap should open a bitmap image on disk and return it wrapped in a Texturer (really it's an SDL2 Texture). This is for caching purposes. Next the Copy() function blits the texture onto the screen renderer using the source and destination rectangles. The uix.Canvas widget orchestrates the caching for the drawing it's responsible for. It queries which chunks are viewable in the Canvas viewport (scroll and bounding boxes), has each chunk render out their entire bitmap image to then cache them as SDL textures and then only _those_ need to be copied out to the renderer each frame. The frame rate now sits at a decent 60 FPS even when the drawing gets messy and full of lines. Each unique version of each chunk needs to render only one time and then it's a fast copy operation for future ticks. Other changes: - Chunker now assigns each Chunk what their coordinate and size are, so that the chunk can self reference that information. This info is considered read-only but that isn't really enforced. - Add Chunker.IterViewportChunks() that returns a channel of Chunk Coordinates that are visible in your viewport, rather than iterating over all of the pixels in all of those chunks. - Add Chunk.ToBitmap(filename) that causes a Chunk to render its pixels to a bitmap image on disk. SDL2 can natively speak Bitmaps for texture caching. Currently these go to files in /tmp but will soon go into your $XDG_CACHE_FOLDER instead. - Add Chunk.Texture() that causes a Chunk to render and then return a cached bitmap texture of the pixels it's responsible for. The texture is cached until the Chunk is next modified with Set() or Delete(). - UI: add an Image widget that currently just shows a bitmap image. It was the first test for caching bitmap images for efficiency. Can show any *.bmp file on disk! - Editor UI: make the StatusBar boxes dynamically build from an array of string pointers to make it SUPER EASY to add/remove labels.
2018-10-18 03:52:14 +00:00
var labelHeight int32
for _, variable := range u.StatusBoxes {
label := ui.NewLabel(ui.Label{
TextVariable: variable,
Font: balance.StatusFont,
})
label.Configure(style)
label.Compute(d.Engine)
frame.Pack(label, ui.Pack{
Anchor: ui.W,
PadX: 1,
})
WIP Texture Caching NOTICE: Chunk size set to 100 for visual testing! NOTICE: guitest references a bmp file that isn't checked in! BUGS REMAINING: - When scrolling the level in Edit Mode, some of the chunks will pop out of existence randomly. - When clicking-dragging to draw in Edit Mode, if the scroll position is not at 0,0 then the pixels drawn will be offset from the cursor. - These are to do with the Scroll position and chunk coordinate calc functions probably. Implements a texture caching interface to stop redrawing everything pixel by pixel on every frame. The texture caching workflow is briefly: - The uix.Canvas widget's Present() function iterates over the list of Chunk Coordinates that are visible inside of the current viewport (i.e. viewable on screen) - For each Chunk: - Make it render and/or return its cached Texture object. - Work out how much of the Chunk will be visible and how to crop the boxes for the Copy() - Copy the cached Texture instead of drawing all the pixels every time like we were doing before. - The Chunk.Texture() function that returns said Texture: - It calls Chunk.ToBitmap() to save a bitmap on disk. - It calls Engine.NewBitmap() to get a Texture it can hang onto. - It hangs onto the Texture and returns it on future calls. - Any call to Set() or Delete() a pixel will invalidate the cache (mark the Chunk "dirty") and Texture() will rebuild next call. The interface `render.Texturer` provides a way for rendering backends (SDL2, OpenGL) to transport a "texture" of their own kind without exposing the type details to the user. The interface `render.Engine` adds two new methods: * NewBitmap(filename string) (Texturer, error) * Copy(t Texturer, src, dst Rect) NewBitmap should open a bitmap image on disk and return it wrapped in a Texturer (really it's an SDL2 Texture). This is for caching purposes. Next the Copy() function blits the texture onto the screen renderer using the source and destination rectangles. The uix.Canvas widget orchestrates the caching for the drawing it's responsible for. It queries which chunks are viewable in the Canvas viewport (scroll and bounding boxes), has each chunk render out their entire bitmap image to then cache them as SDL textures and then only _those_ need to be copied out to the renderer each frame. The frame rate now sits at a decent 60 FPS even when the drawing gets messy and full of lines. Each unique version of each chunk needs to render only one time and then it's a fast copy operation for future ticks. Other changes: - Chunker now assigns each Chunk what their coordinate and size are, so that the chunk can self reference that information. This info is considered read-only but that isn't really enforced. - Add Chunker.IterViewportChunks() that returns a channel of Chunk Coordinates that are visible in your viewport, rather than iterating over all of the pixels in all of those chunks. - Add Chunk.ToBitmap(filename) that causes a Chunk to render its pixels to a bitmap image on disk. SDL2 can natively speak Bitmaps for texture caching. Currently these go to files in /tmp but will soon go into your $XDG_CACHE_FOLDER instead. - Add Chunk.Texture() that causes a Chunk to render and then return a cached bitmap texture of the pixels it's responsible for. The texture is cached until the Chunk is next modified with Set() or Delete(). - UI: add an Image widget that currently just shows a bitmap image. It was the first test for caching bitmap images for efficiency. Can show any *.bmp file on disk! - Editor UI: make the StatusBar boxes dynamically build from an array of string pointers to make it SUPER EASY to add/remove labels.
2018-10-18 03:52:14 +00:00
if labelHeight == 0 {
labelHeight = label.BoxSize().H
}
}
// TODO: right-aligned labels clip out of bounds
extraLabel := ui.NewLabel(ui.Label{
Text: "blah",
Font: balance.StatusFont,
})
extraLabel.Configure(ui.Config{
Background: render.Grey,
BorderStyle: ui.BorderSunken,
BorderColor: render.Grey,
BorderSize: 1,
})
extraLabel.Compute(d.Engine)
frame.Pack(extraLabel, ui.Pack{
Anchor: ui.E,
})
Draw Actors Embedded in Levels in Edit Mode Add the JSON format for embedding Actors (Doodad instances) inside of a Level. I made a test map that manually inserted a couple of actors. Actors are given to the Canvas responsible for the Level via the function `InstallActors()`. So it means you'll call LoadLevel and then InstallActors to hook everything up. The Canvas creates sub-Canvas widgets from each Actor. After drawing the main level geometry from the Canvas.Chunker, it calls the drawActors() function which does the same but for Actors. Levels keep a global map of all Actors that exist. For any Actors that are visible within the Viewport, their sub-Canvas widgets are presented appropriately on top of the parent Canvas. In case their sub-Canvas overlaps the parent's boundaries, their sub-Canvas is resized and moved appropriately. - Allow the MainWindow to be resized at run time, and the UI recalculates its sizing and position. - Made the in-game Shell properties editable via environment variables. The kirsle.env file sets a blue and pink color scheme. - Begin the ground work for Levels and Doodads to embed files inside their data via the level.FileSystem type. - UI: Labels can now contain line break characters. It will appropriately render multiple lines of render.Text and take into account the proper BoxSize to contain them all. - Add environment variable DOODLE_DEBUG_ALL=true that will turn on ALL debug overlay and visualization options. - Add debug overlay to "tag" each Canvas widget with some of its details, like its Name and World Position. Can be enabled with the environment variable DEBUG_CANVAS_LABEL=true - Improved the FPS debug overlay to show in labeled columns and multiple colors, with easy ability to add new data points to it.
2018-10-19 20:31:58 +00:00
// Set the initial good frame size to have the height secured,
// so when resizing the application window we can just adjust for width.
frame.Resize(render.Rect{
Draw Actors Embedded in Levels in Edit Mode Add the JSON format for embedding Actors (Doodad instances) inside of a Level. I made a test map that manually inserted a couple of actors. Actors are given to the Canvas responsible for the Level via the function `InstallActors()`. So it means you'll call LoadLevel and then InstallActors to hook everything up. The Canvas creates sub-Canvas widgets from each Actor. After drawing the main level geometry from the Canvas.Chunker, it calls the drawActors() function which does the same but for Actors. Levels keep a global map of all Actors that exist. For any Actors that are visible within the Viewport, their sub-Canvas widgets are presented appropriately on top of the parent Canvas. In case their sub-Canvas overlaps the parent's boundaries, their sub-Canvas is resized and moved appropriately. - Allow the MainWindow to be resized at run time, and the UI recalculates its sizing and position. - Made the in-game Shell properties editable via environment variables. The kirsle.env file sets a blue and pink color scheme. - Begin the ground work for Levels and Doodads to embed files inside their data via the level.FileSystem type. - UI: Labels can now contain line break characters. It will appropriately render multiple lines of render.Text and take into account the proper BoxSize to contain them all. - Add environment variable DOODLE_DEBUG_ALL=true that will turn on ALL debug overlay and visualization options. - Add debug overlay to "tag" each Canvas widget with some of its details, like its Name and World Position. Can be enabled with the environment variable DEBUG_CANVAS_LABEL=true - Improved the FPS debug overlay to show in labeled columns and multiple colors, with easy ability to add new data points to it.
2018-10-19 20:31:58 +00:00
W: int32(d.width),
WIP Texture Caching NOTICE: Chunk size set to 100 for visual testing! NOTICE: guitest references a bmp file that isn't checked in! BUGS REMAINING: - When scrolling the level in Edit Mode, some of the chunks will pop out of existence randomly. - When clicking-dragging to draw in Edit Mode, if the scroll position is not at 0,0 then the pixels drawn will be offset from the cursor. - These are to do with the Scroll position and chunk coordinate calc functions probably. Implements a texture caching interface to stop redrawing everything pixel by pixel on every frame. The texture caching workflow is briefly: - The uix.Canvas widget's Present() function iterates over the list of Chunk Coordinates that are visible inside of the current viewport (i.e. viewable on screen) - For each Chunk: - Make it render and/or return its cached Texture object. - Work out how much of the Chunk will be visible and how to crop the boxes for the Copy() - Copy the cached Texture instead of drawing all the pixels every time like we were doing before. - The Chunk.Texture() function that returns said Texture: - It calls Chunk.ToBitmap() to save a bitmap on disk. - It calls Engine.NewBitmap() to get a Texture it can hang onto. - It hangs onto the Texture and returns it on future calls. - Any call to Set() or Delete() a pixel will invalidate the cache (mark the Chunk "dirty") and Texture() will rebuild next call. The interface `render.Texturer` provides a way for rendering backends (SDL2, OpenGL) to transport a "texture" of their own kind without exposing the type details to the user. The interface `render.Engine` adds two new methods: * NewBitmap(filename string) (Texturer, error) * Copy(t Texturer, src, dst Rect) NewBitmap should open a bitmap image on disk and return it wrapped in a Texturer (really it's an SDL2 Texture). This is for caching purposes. Next the Copy() function blits the texture onto the screen renderer using the source and destination rectangles. The uix.Canvas widget orchestrates the caching for the drawing it's responsible for. It queries which chunks are viewable in the Canvas viewport (scroll and bounding boxes), has each chunk render out their entire bitmap image to then cache them as SDL textures and then only _those_ need to be copied out to the renderer each frame. The frame rate now sits at a decent 60 FPS even when the drawing gets messy and full of lines. Each unique version of each chunk needs to render only one time and then it's a fast copy operation for future ticks. Other changes: - Chunker now assigns each Chunk what their coordinate and size are, so that the chunk can self reference that information. This info is considered read-only but that isn't really enforced. - Add Chunker.IterViewportChunks() that returns a channel of Chunk Coordinates that are visible in your viewport, rather than iterating over all of the pixels in all of those chunks. - Add Chunk.ToBitmap(filename) that causes a Chunk to render its pixels to a bitmap image on disk. SDL2 can natively speak Bitmaps for texture caching. Currently these go to files in /tmp but will soon go into your $XDG_CACHE_FOLDER instead. - Add Chunk.Texture() that causes a Chunk to render and then return a cached bitmap texture of the pixels it's responsible for. The texture is cached until the Chunk is next modified with Set() or Delete(). - UI: add an Image widget that currently just shows a bitmap image. It was the first test for caching bitmap images for efficiency. Can show any *.bmp file on disk! - Editor UI: make the StatusBar boxes dynamically build from an array of string pointers to make it SUPER EASY to add/remove labels.
2018-10-18 03:52:14 +00:00
H: labelHeight + frame.BoxThickness(1),
})
frame.Compute(d.Engine)
return frame
}