251 lines
7.6 KiB
Go
251 lines
7.6 KiB
Go
package theme
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import "image"
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import "bytes"
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import _ "embed"
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import _ "image/png"
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import "image/color"
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import "golang.org/x/image/font"
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import "golang.org/x/image/font/basicfont"
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import "tomo"
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import "tomo/data"
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import "art"
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import "art/artutil"
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import "art/patterns"
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//go:embed assets/default.png
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var defaultAtlasBytes []byte
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var defaultAtlas art.Canvas
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var defaultTextures [7][7]art.Pattern
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//go:embed assets/wintergreen-icons-small.png
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var defaultIconsSmallAtlasBytes []byte
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var defaultIconsSmall [640]binaryIcon
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//go:embed assets/wintergreen-icons-large.png
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var defaultIconsLargeAtlasBytes []byte
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var defaultIconsLarge [640]binaryIcon
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func atlasCell (col, row int, border art.Inset) {
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bounds := image.Rect(0, 0, 8, 8).Add(image.Pt(col, row).Mul(8))
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defaultTextures[col][row] = patterns.Border {
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Canvas: art.Cut(defaultAtlas, bounds),
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Inset: border,
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}
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}
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func atlasCol (col int, border art.Inset) {
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for index, _ := range defaultTextures[col] {
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atlasCell(col, index, border)
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}
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}
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type binaryIcon struct {
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data []bool
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stride int
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}
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func (icon binaryIcon) Draw (destination art.Canvas, color color.RGBA, at image.Point) {
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bounds := icon.Bounds().Add(at).Intersect(destination.Bounds())
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point := image.Point { }
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data, stride := destination.Buffer()
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for point.Y = bounds.Min.Y; point.Y < bounds.Max.Y; point.Y ++ {
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for point.X = bounds.Min.X; point.X < bounds.Max.X; point.X ++ {
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srcPoint := point.Sub(at)
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srcIndex := srcPoint.X + srcPoint.Y * icon.stride
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dstIndex := point.X + point.Y * stride
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if icon.data[srcIndex] {
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data[dstIndex] = color
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}
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}}
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}
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func (icon binaryIcon) Bounds () image.Rectangle {
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return image.Rect(0, 0, icon.stride, len(icon.data) / icon.stride)
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}
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func binaryIconFrom (source image.Image, clip image.Rectangle) (icon binaryIcon) {
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bounds := source.Bounds().Intersect(clip)
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if bounds.Empty() { return }
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icon.stride = bounds.Dx()
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icon.data = make([]bool, bounds.Dx() * bounds.Dy())
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point := image.Point { }
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dstIndex := 0
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for point.Y = bounds.Min.Y; point.Y < bounds.Max.Y; point.Y ++ {
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for point.X = bounds.Min.X; point.X < bounds.Max.X; point.X ++ {
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r, g, b, a := source.At(point.X, point.Y).RGBA()
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if a > 0x8000 && (r + g + b) / 3 < 0x8000 {
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icon.data[dstIndex] = true
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}
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dstIndex ++
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}}
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return
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}
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func init () {
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defaultAtlasImage, _, _ := image.Decode(bytes.NewReader(defaultAtlasBytes))
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defaultAtlas = art.FromImage(defaultAtlasImage)
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atlasCol(0, art.I(0))
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atlasCol(1, art.I(3))
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atlasCol(2, art.I(1))
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atlasCol(3, art.I(1))
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atlasCol(4, art.I(1))
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atlasCol(5, art.I(3))
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atlasCol(6, art.I(1))
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// set up small icons
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defaultIconsSmallAtlasImage, _, _ := image.Decode (
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bytes.NewReader(defaultIconsSmallAtlasBytes))
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point := image.Point { }
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iconIndex := 0
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for point.Y = 0; point.Y < 20; point.Y ++ {
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for point.X = 0; point.X < 32; point.X ++ {
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defaultIconsSmall[iconIndex] = binaryIconFrom (
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defaultIconsSmallAtlasImage,
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image.Rect(0, 0, 16, 16).Add(point.Mul(16)))
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iconIndex ++
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}}
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// set up large icons
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defaultIconsLargeAtlasImage, _, _ := image.Decode (
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bytes.NewReader(defaultIconsLargeAtlasBytes))
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point = image.Point { }
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iconIndex = 0
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for point.Y = 0; point.Y < 8; point.Y ++ {
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for point.X = 0; point.X < 32; point.X ++ {
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defaultIconsLarge[iconIndex] = binaryIconFrom (
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defaultIconsLargeAtlasImage,
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image.Rect(0, 0, 32, 32).Add(point.Mul(32)))
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iconIndex ++
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}}
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iconIndex = 384
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for point.Y = 8; point.Y < 12; point.Y ++ {
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for point.X = 0; point.X < 32; point.X ++ {
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defaultIconsLarge[iconIndex] = binaryIconFrom (
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defaultIconsLargeAtlasImage,
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image.Rect(0, 0, 32, 32).Add(point.Mul(32)))
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iconIndex ++
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}}
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}
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// Default is the default theme.
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type Default struct { }
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// FontFace returns the default font face.
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func (Default) FontFace (style tomo.FontStyle, size tomo.FontSize, c tomo.Case) font.Face {
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return basicfont.Face7x13
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}
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// Icon returns an icon from the default set corresponding to the given name.
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func (Default) Icon (id tomo.Icon, size tomo.IconSize, c tomo.Case) art.Icon {
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if size == tomo.IconSizeLarge {
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if id < 0 || int(id) >= len(defaultIconsLarge) {
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return nil
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} else {
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return defaultIconsLarge[id]
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}
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} else {
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if id < 0 || int(id) >= len(defaultIconsSmall) {
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return nil
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} else {
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return defaultIconsSmall[id]
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}
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}
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}
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// MimeIcon returns an icon from the default set corresponding to the given mime.
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// type.
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func (Default) MimeIcon (data.Mime, tomo.IconSize, tomo.Case) art.Icon {
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// TODO
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return nil
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}
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// Pattern returns a pattern from the default theme corresponding to the given
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// pattern ID.
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func (Default) Pattern (id tomo.Pattern, state tomo.State, c tomo.Case) art.Pattern {
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offset := 0; switch {
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case state.Disabled: offset = 1
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case state.Pressed && state.On: offset = 4
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case state.Focused && state.On: offset = 6
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case state.On: offset = 2
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case state.Pressed: offset = 3
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case state.Focused: offset = 5
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}
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switch id {
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case tomo.PatternBackground: return patterns.Uhex(0xaaaaaaFF)
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case tomo.PatternDead: return defaultTextures[0][offset]
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case tomo.PatternRaised: return defaultTextures[1][offset]
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case tomo.PatternSunken: return defaultTextures[2][offset]
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case tomo.PatternPinboard: return defaultTextures[3][offset]
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case tomo.PatternButton: return defaultTextures[1][offset]
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case tomo.PatternInput: return defaultTextures[2][offset]
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case tomo.PatternGutter: return defaultTextures[2][offset]
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case tomo.PatternHandle: return defaultTextures[3][offset]
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case tomo.PatternLine: return defaultTextures[0][offset]
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case tomo.PatternMercury: return defaultTextures[4][offset]
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case tomo.PatternTableHead: return defaultTextures[5][offset]
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case tomo.PatternTableCell: return defaultTextures[5][offset]
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case tomo.PatternLamp: return defaultTextures[6][offset]
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default: return patterns.Uhex(0xFF00FFFF)
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}
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}
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func (Default) Color (id tomo.Color, state tomo.State, c tomo.Case) color.RGBA {
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if state.Disabled { return artutil.Hex(0x444444FF) }
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return artutil.Hex (map[tomo.Color] uint32 {
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tomo.ColorBlack: 0x272d24FF,
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tomo.ColorRed: 0x8c4230FF,
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tomo.ColorGreen: 0x69905fFF,
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tomo.ColorYellow: 0x9a973dFF,
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tomo.ColorBlue: 0x3d808fFF,
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tomo.ColorPurple: 0x8c608bFF,
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tomo.ColorCyan: 0x3d8f84FF,
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tomo.ColorWhite: 0xaea894FF,
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tomo.ColorBrightBlack: 0x4f5142FF,
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tomo.ColorBrightRed: 0xbd6f59FF,
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tomo.ColorBrightGreen: 0x8dad84FF,
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tomo.ColorBrightYellow: 0xe2c558FF,
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tomo.ColorBrightBlue: 0x77b1beFF,
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tomo.ColorBrightPurple: 0xc991c8FF,
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tomo.ColorBrightCyan: 0x74c7b7FF,
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tomo.ColorBrightWhite: 0xcfd7d2FF,
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tomo.ColorForeground: 0x000000FF,
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tomo.ColorMidground: 0x656565FF,
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tomo.ColorBackground: 0xAAAAAAFF,
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tomo.ColorShadow: 0x000000FF,
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tomo.ColorShine: 0xFFFFFFFF,
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tomo.ColorAccent: 0xff3300FF,
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} [id])
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}
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// Padding returns the default padding value for the given pattern.
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func (Default) Padding (id tomo.Pattern, c tomo.Case) art.Inset {
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switch id {
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case tomo.PatternGutter: return art.I(0)
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case tomo.PatternLine: return art.I(1)
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default: return art.I(6)
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}
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}
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// Margin returns the default margin value for the given pattern.
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func (Default) Margin (id tomo.Pattern, c tomo.Case) image.Point {
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return image.Pt(6, 6)
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}
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// Hints returns rendering optimization hints for a particular pattern.
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// These are optional, but following them may result in improved
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// performance.
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func (Default) Hints (pattern tomo.Pattern, c tomo.Case) (hints tomo.Hints) {
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return
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}
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// Sink returns the default sink vector for the given pattern.
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func (Default) Sink (pattern tomo.Pattern, c tomo.Case) image.Point {
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return image.Point { 1, 1 }
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}
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