Noah Petherbridge
77297fd60d
Two new tools added to the Level Editor: * Pan Tool: left-click to scroll the level around safely. * Text Tool: write text onto your level. Features of the Text Tool: * Can choose from the game's built-in fonts, size and enter the message you want to write. * The mouse cursor previews the text when hovered over the level. * Click to "stamp" the text onto your level. The currently selected color swatch will be used to color the text in. * Adds two new fonts: Azulian.ttf and Rive.ttf that can be selected in the Text Tool. Some implementation notes: * Added package native/engine_sdl.go that handles the lower-level SDL2_TTF logic to rasterize the text into a black&white image. * WASM not supported yet (if the game even still built for WASM); native/engine_wasm.go stubs out the TextToImage() call with a "not supported" error just in case. Other changes: * New Toolbar icons: they are 24x24 instead of 32x32 to make more room for more tools. * The toolbar now shows two buttons per row for a more densely packed layout. For very narrow screen widths (< 600px) the default Vertical Toolbar layout will use one-button-per-row to not eat too much screen real estate. * In the Horizontal Toolbars layout there are 2 buttons per column.
57 lines
1.3 KiB
Go
57 lines
1.3 KiB
Go
package drawtool
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import (
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"git.kirsle.net/apps/doodle/pkg/native"
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"git.kirsle.net/go/render"
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"git.kirsle.net/go/ui"
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)
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// TextSettings holds currently selected Text Tool settings.
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type TextSettings struct {
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Font string // like 'DejaVuSans.ttf'
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Size int
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Message string
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Label *ui.Label // cached label texture
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}
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// Currently active settings (global variable)
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var TT TextSettings
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// IsZero checks if the TextSettings are populated.
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func (tt TextSettings) IsZero() bool {
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return tt.Font == "" && tt.Size == 0 && tt.Message == ""
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}
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// ToStroke converts a TextSettings configuration into a Freehand
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// Stroke, coloring in all of the pixels.
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func (tt TextSettings) ToStroke(e render.Engine, color render.Color, at render.Point) (*Stroke, error) {
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stroke := NewStroke(Freehand, color)
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// Render the text to a Go image so we can get the colors from
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// it uniformly.
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img, err := native.TextToImage(e, tt.Label.Font)
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if err != nil {
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return nil, err
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}
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// Pull all its pixels.
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var (
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max = img.Bounds().Max
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x = 0
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y = 0
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)
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for x = 0; x < max.X; x++ {
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for y = 0; y < max.Y; y++ {
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hue := img.At(x, y)
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r, g, b, _ := hue.RGBA()
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if r == 65535 && g == r && b == r {
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continue
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}
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stroke.Points = append(stroke.Points, render.NewPoint(x+at.X, y+at.Y))
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}
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}
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return stroke, nil
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}
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