Restructure internal theme

This commit is contained in:
2024-06-12 00:19:12 -04:00
parent 86fb87c7f6
commit 03ca852475
19 changed files with 257 additions and 287 deletions

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package aluminumStyle
import "image/color"
import "git.tebibyte.media/tomo/tomo"
import "git.tebibyte.media/tomo/nasin/internal/style"
// New returns Aluminum, a futuristic, bluish-white style.
func New () *style.Style {
return &style.Style {
Colors: map[tomo.Color] color.Color {
tomo.ColorBackground: colorBackground,
tomo.ColorForeground: colorForeground,
tomo.ColorRaised: colorRaised,
tomo.ColorSunken: colorSunken,
tomo.ColorAccent: colorFocus,
},
Rules: rules,
}
}

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package aluminumStyle
import "image/color"
import "git.tebibyte.media/tomo/tomo"
import "golang.org/x/image/font/basicfont"
import "git.tebibyte.media/tomo/nasin/internal/style"
func hex (color uint32) (c color.RGBA) {
c.A = uint8(color)
c.B = uint8(color >> 8)
c.G = uint8(color >> 16)
c.R = uint8(color >> 24)
return
}
func border (top, right, bottom, left uint32, width ...int) tomo.Border {
return tomo.Border {
Width: tomo.I(width...),
Color: [4]color.Color {
hex(top), hex(right),
hex(bottom), hex(left),
},
}
}
var colorDot = hex(0x7391c080)
var colorFocus = hex(0x5f8bc4FF)
var colorHighlight = hex(0x5f8bc4FF)
var colorBackground = hex(0xd4d4d4FF)
var colorForeground = color.Black
var colorOutline = color.Black
var colorGutter = hex(0xbfc6d1FF)
var colorGutterHovered = hex(0xc5cbd6FF)
var colorRaised = hex(0xe9eaeaFF)
var colorRaisedPressed = hex(0xccd4ddFF)
var colorRaisedFocused = hex(0xcfd6ddFF)
var colorRaisedHovered = hex(0xf1f3f5FF)
var colorSunken = hex(0xe9eaeaFF)
var colorSunkenFocused = hex(0xe0e6eeFF)
var colorSunkenPressed = hex(0xe0e6eeFF)
var outline = tomo.Border {
Width: tomo.I(1),
Color: [4]color.Color {
colorOutline,
colorOutline,
colorOutline,
colorOutline,
},
}
var borderEngraved = border(0xc3c3c5FF, 0xe3e3e3FF, 0xe9e9e9ff, 0xc2c2c2ff, 1)
var borderGap = border(0x697c7cFF, 0x566767FF, 0x566767ff, 0x697c7cff, 1)
var borderLifted = border(0xf9fafcFF, 0xc2c8d3FF, 0xa4afc0ff, 0xf5f6f8ff, 1)
var borderLiftedFocused = border(0xf0f4f9FF, 0xb1bacaFF, 0x9aa6b7ff, 0xe4e9eeff, 1)
var borderFocused = border(0x5f8bc4FF, 0x5f8bc4FF, 0x5f8bc4ff, 0x5f8bc4ff, 1)
var borderTear = borderEngraved
var borderTearFocused = border(0x7f94b5FF, 0xced7e4FF, 0xced7e4FF, 0x7f94b5FF, 1)
var borderTearPad = border(0x00000000, 0x00000000, 0x00000000, 0x00000000, 3)
var borderTearPadFocused = border(0x7391c080, 0x7391c080, 0x7391c080, 0x7391c080, 3)
var borderInnerShadow = border(0xa4afc0FF, 0xa4afc0FF, 0xa4afc0ff, 0xa4afc0ff, 1, 0, 0, 1)
var borderOuterShadow = border(0xa4afc0FF, 0xa4afc0FF, 0xa4afc0ff, 0xa4afc0ff, 0, 1, 1, 0)
var rules = []style.Rule {
// *.*[*]
style.Rule {
Default: style.AS (
style.AttrFace { Face: basicfont.Face7x13 },
style.AttrTextColor { Color: tomo.ColorForeground },
style.AttrDotColor { Color: colorDot },
style.AttrGap { X: 8, Y: 8 },
),
},
// *.Button[*]
style.Rule {
Role: tomo.R("", "Button", ""),
Default: style.AS (
style.AttrBorder {
borderEngraved,
borderGap,
borderLifted,
},
style.AttrPadding(tomo.I(4, 8)),
style.AttrColor { Color: tomo.ColorRaised },
),
Pressed: style.AS (
style.AttrBorder {
borderEngraved,
borderGap,
borderInnerShadow,
},
style.AttrPadding(tomo.I(5, 8, 4, 9)),
style.AttrColor { Color: colorRaisedPressed },
),
Focused: style.AS (
style.AttrBorder {
borderEngraved,
borderGap,
borderLiftedFocused,
},
style.AttrPadding(tomo.I(4, 8)),
style.AttrColor { Color: colorRaisedFocused },
),
Hovered: style.AS (
style.AttrColor { Color: colorRaisedHovered },
),
},
// *.TextInput[*]
style.Rule {
Role: tomo.R("", "TextInput", ""),
Default: style.AS (
style.AttrBorder {
borderEngraved,
borderGap,
borderInnerShadow,
},
style.AttrColor { Color: tomo.ColorSunken },
style.AttrPadding(tomo.I(5, 4, 4, 5)),
),
Focused: style.AS (
style.AttrBorder {
borderEngraved,
borderFocused,
borderInnerShadow,
},
),
},
// *.TextView[*]
style.Rule {
Role: tomo.R("", "TextView", ""),
Default: style.AS (
style.AttrBorder {
borderEngraved,
borderGap,
borderInnerShadow,
},
style.AttrColor { Color: tomo.ColorSunken },
style.AttrPadding(tomo.I(8)),
),
},
// *.NumberInput[*]
style.Rule {
Role: tomo.R("", "NumberInput", ""),
Default: style.AS (
style.AttrGap { },
),
},
// *.Container[sunken]
style.Rule {
Role: tomo.R("", "Container", "sunken"),
Default: style.AS (
style.AttrBorder {
borderEngraved,
borderGap,
borderInnerShadow,
},
style.AttrColor { Color: tomo.ColorSunken },
style.AttrPadding(tomo.I(8)),
),
},
// *.Container[outer]
style.Rule {
Role: tomo.R("", "Container", "outer"),
Default: style.AS (
style.AttrColor { Color: tomo.ColorBackground },
style.AttrPadding(tomo.I(8)),
),
},
// *.Container[menu]
style.Rule {
Role: tomo.R("", "Container", "menu"),
Default: style.AS (
style.AttrBorder {
borderGap,
borderLifted,
},
style.AttrColor { Color: tomo.ColorBackground },
style.AttrGap { },
),
},
// *.Heading[*]
style.Rule {
Role: tomo.R("", "Heading", ""),
Default: style.AS (
style.AttrAlign { X: tomo.AlignMiddle, Y: tomo.AlignMiddle },
),
},
// *.Separator[*]
style.Rule {
Role: tomo.R("", "Separator", ""),
Default: style.AS (
style.AttrBorder {
borderEngraved,
},
),
},
// *.Slider[*]
style.Rule {
Role: tomo.R("", "Slider", ""),
Default: style.AS (
style.AttrBorder {
borderEngraved,
borderGap,
borderInnerShadow,
},
style.AttrColor { Color: colorGutter },
),
Focused: style.AS (
style.AttrBorder {
borderEngraved,
borderFocused,
borderInnerShadow,
},
),
Hovered: style.AS (
style.AttrColor { Color: colorGutterHovered },
),
},
// *.Slider[horizontal]
style.Rule {
Role: tomo.R("", "Slider", "horizontal"),
Default: style.AS(style.AttrMinimumSize { X: 48 }),
},
// *.Slider[vertical]
style.Rule {
Role: tomo.R("", "Slider", "vertical"),
Default: style.AS(style.AttrMinimumSize { Y: 48 }),
},
// *.SliderHandle[*]
style.Rule {
Role: tomo.R("", "SliderHandle", ""),
Default: style.AS (
style.AttrBorder {
borderOuterShadow,
borderGap,
borderLifted,
},
style.AttrColor { Color: tomo.ColorRaised },
style.AttrMinimumSize { X: 12, Y: 12, },
),
},
// *.Checkbox[*]
style.Rule {
Role: tomo.R("", "Checkbox", ""),
Default: style.AS (
style.AttrBorder {
borderEngraved,
borderGap,
borderInnerShadow,
},
style.AttrColor { Color: tomo.ColorSunken },
style.AttrPadding(tomo.I(0, 1, 1, 0)),
style.AttrMinimumSize { X: 19, Y: 19 },
),
Focused: style.AS (
style.AttrBorder {
borderEngraved,
borderFocused,
borderInnerShadow,
},
style.AttrPadding(tomo.I(0)),
style.AttrColor { Color: colorSunkenFocused },
),
},
// *.LabelCheckbox[*]
style.Rule {
Role: tomo.R("", "LabelCheckbox", ""),
Default: style.AS (
style.AttrGap { X: 8, Y: 8 },
),
},
// *.MenuItem[*]
style.Rule {
Role: tomo.R("", "MenuItem", ""),
Default: style.AS (
style.AttrPadding(tomo.I(4)),
style.AttrGap { X: 4, Y: 4 },
style.AttrColor { Color: color.Transparent },
),
Hovered: style.AS (
style.AttrColor { Color: colorDot },
),
Focused: style.AS (
style.AttrColor { Color: colorDot },
),
},
// *.File[*]
style.Rule {
Role: tomo.R("", "File", ""),
Default: style.AS (
style.AttrColor { Color: color.Transparent },
),
Focused: style.AS (
style.AttrColor { Color: colorDot },
),
},
// *.TearLine[*]
style.Rule {
Role: tomo.R("", "TearLine", ""),
Default: style.AS (
style.AttrBorder {
borderTearPad,
borderTear,
},
),
Hovered: style.AS (
style.AttrBorder {
borderTearPadFocused,
borderTearFocused,
},
),
Focused: style.AS (
style.AttrBorder {
borderTearPadFocused,
borderTearFocused,
},
),
},
}

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package style
import "image"
import "image/color"
import "golang.org/x/image/font"
import "git.tebibyte.media/tomo/tomo"
// Attr modifies one thing about an Objects's style.
type Attr interface { attr () int }
// AttrColor sets the background color of an Objects.
type AttrColor struct { color.Color }
// AttrTexture sets the texture of an Objects to a named texture.
type AttrTexture string
// AttrBorder sets the border of an Objects.
type AttrBorder []tomo.Border
// AttrMinimumSize sets the minimum size of an Objects.
type AttrMinimumSize image.Point
// AttrPadding sets the inner padding of an Objects.
type AttrPadding tomo.Inset
// AttrGap sets the gap between child Objects, if the Object is a ContainerBox.
type AttrGap image.Point
// AttrTextColor sets the text color, if the Object is a TextBox.
type AttrTextColor struct { color.Color }
// AttrDotColor sets the text selection color, if the Object is a TextBox.
type AttrDotColor struct { color.Color }
// AttrFace sets the font face, if the Object is a TextBox.
type AttrFace struct { font.Face }
// AttrAlign sets the alignment, if the Object is a ContentBox.
type AttrAlign struct { X, Y tomo.Align }
func (AttrColor) attr () int { return 0 }
func (AttrTexture) attr () int { return 1 }
func (AttrBorder) attr () int { return 2 }
func (AttrMinimumSize) attr () int { return 3 }
func (AttrPadding) attr () int { return 4 }
func (AttrGap) attr () int { return 5 }
func (AttrTextColor) attr () int { return 6 }
func (AttrDotColor) attr () int { return 7 }
func (AttrFace) attr () int { return 8 }
func (AttrAlign) attr () int { return 9 }

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package fallbackStyle
import "image/color"
import "git.tebibyte.media/tomo/tomo"
import "golang.org/x/image/font/basicfont"
import "git.tebibyte.media/tomo/nasin/internal/style"
var colorFocus = color.RGBA { R: 61, G: 128, B: 143, A: 255 }
var colorInput = color.RGBA { R: 208, G: 203, B: 150, A: 255 }
var colorCarved = color.RGBA { R: 151, G: 160, B: 150, A: 255 }
var colorGutter = color.RGBA { R: 116, G: 132, B: 126, A: 255 }
var colorShadow = color.RGBA { R: 57, G: 59, B: 57, A: 255 }
var colorInputShadow = color.RGBA { R: 143, G: 146, B: 91, A: 255 }
var colorHighlight = color.RGBA { R: 207, G: 215, B: 210, A: 255 }
var colorBackground = color.RGBA { R: 169, G: 171, B: 168, A: 255 }
var colorCarvedPressed = color.RGBA { R: 129, G: 142, B: 137, A: 255 }
var colorForeground = color.Black
var colorOutline = color.Black
var outline = tomo.Border {
Width: tomo.I(1),
Color: [4]color.Color {
colorOutline,
colorOutline,
colorOutline,
colorOutline,
},
}
var borderColorEngraved = [4]color.Color { colorShadow, colorHighlight, colorHighlight, colorShadow }
var borderColorLifted = [4]color.Color { colorHighlight, colorShadow, colorShadow, colorHighlight }
var borderColorInput = [4]color.Color { colorInputShadow, colorInput, colorInput, colorInputShadow }
var borderColorFocused = [4]color.Color { colorFocus, colorFocus, colorFocus, colorFocus }
var rules = []style.Rule {
// *.*[*]
style.Rule {
Default: style.AS (
style.AttrFace { Face: basicfont.Face7x13 },
style.AttrTextColor { Color: tomo.ColorForeground },
style.AttrDotColor { Color: tomo.ColorAccent },
style.AttrGap { X: 8, Y: 8 },
),
},
// *.Button[*]
style.Rule {
Role: tomo.R("", "Button", ""),
Default: style.AS (
style.AttrBorder {
outline,
tomo.Border {
Width: tomo.I(1),
Color: borderColorLifted,
},
},
style.AttrPadding(tomo.I(4, 8)),
style.AttrColor { Color: tomo.ColorRaised },
),
Pressed: style.AS (
style.AttrBorder {
outline,
tomo.Border {
Width: tomo.I(1, 0, 0, 1),
Color: borderColorEngraved,
},
},
style.AttrPadding(tomo.I(5, 8, 4, 9)),
style.AttrColor { Color: colorCarvedPressed },
),
Focused: style.AS (
style.AttrBorder {
outline,
tomo.Border {
Width: tomo.I(1),
Color: borderColorFocused,
},
},
style.AttrPadding(tomo.I(4, 8)),
),
},
// *.TextInput[*]
style.Rule {
Role: tomo.R("", "TextInput", ""),
Default: style.AS (
style.AttrBorder {
outline,
tomo.Border {
Width: tomo.I(1),
Color: borderColorInput,
},
},
style.AttrColor { Color: colorInput },
style.AttrPadding(tomo.I(5, 4, 4, 5)),
),
Focused: style.AS (
style.AttrBorder {
outline,
tomo.Border {
Width: tomo.I(1),
Color: borderColorFocused,
},
},
),
},
// *.TextView[*]
style.Rule {
Role: tomo.R("", "TextView", ""),
Default: style.AS (
style.AttrBorder {
outline,
tomo.Border {
Width: tomo.I(1, 0, 0, 1),
Color: borderColorEngraved,
},
},
style.AttrColor { Color: tomo.ColorSunken },
style.AttrPadding(tomo.I(8)),
),
},
// *.NumberInput[*]
style.Rule {
Role: tomo.R("", "NumberInput", ""),
Default: style.AS (
style.AttrGap { },
),
},
// *.Container[sunken]
style.Rule {
Role: tomo.R("", "Container", "sunken"),
Default: style.AS (
style.AttrBorder {
outline,
tomo.Border {
Width: tomo.I(1, 0, 0, 1),
Color: borderColorEngraved,
},
},
style.AttrColor { Color: tomo.ColorSunken },
style.AttrPadding(tomo.I(8)),
),
},
// *.Container[outer]
style.Rule {
Role: tomo.R("", "Container", "outer"),
Default: style.AS (
style.AttrColor { Color: tomo.ColorBackground },
style.AttrPadding(tomo.I(8)),
),
},
// *.Container[menu]
style.Rule {
Role: tomo.R("", "Container", "menu"),
Default: style.AS (
style.AttrBorder {
outline,
tomo.Border {
Width: tomo.I(1),
Color: borderColorLifted,
},
},
style.AttrColor { Color: tomo.ColorBackground },
style.AttrGap { },
),
},
// *.Heading[*]
style.Rule {
Role: tomo.R("", "Heading", ""),
Default: style.AS (
style.AttrAlign { X: tomo.AlignMiddle, Y: tomo.AlignMiddle },
),
},
// *.Separator[*]
style.Rule {
Role: tomo.R("", "Separator", ""),
Default: style.AS (
style.AttrBorder {
tomo.Border {
Width: tomo.I(1),
Color: borderColorEngraved,
},
},
),
},
// *.Slider[*]
style.Rule {
Role: tomo.R("", "Slider", ""),
Default: style.AS (
style.AttrBorder {
outline,
tomo.Border {
Width: tomo.I(1, 0, 0, 1),
Color: borderColorEngraved,
},
},
style.AttrColor { Color: colorGutter },
style.AttrPadding(tomo.I(0, 1, 1, 0)),
),
Focused: style.AS (
style.AttrBorder {
outline,
tomo.Border {
Width: tomo.I(1),
Color: borderColorFocused,
},
},
style.AttrPadding(tomo.I(0)),
),
},
// *.Slider[horizontal]
style.Rule {
Role: tomo.R("", "Slider", "horizontal"),
Default: style.AS(style.AttrMinimumSize { X: 48 }),
},
// *.Slider[vertical]
style.Rule {
Role: tomo.R("", "Slider", "vertical"),
Default: style.AS(style.AttrMinimumSize { Y: 48 }),
},
// *.SliderHandle[*]
style.Rule {
Role: tomo.R("", "SliderHandle", ""),
Default: style.AS (
style.AttrBorder {
outline,
tomo.Border {
Width: tomo.I(1),
Color: borderColorLifted,
},
},
style.AttrColor { Color: tomo.ColorRaised },
style.AttrMinimumSize { X: 12, Y: 12, },
),
},
// *.Checkbox[*]
style.Rule {
Role: tomo.R("", "Checkbox", ""),
Default: style.AS (
style.AttrBorder {
outline,
tomo.Border {
Width: tomo.I(1, 0, 0, 1),
Color: borderColorEngraved,
},
},
style.AttrColor { Color: tomo.ColorSunken },
style.AttrPadding(tomo.I(0, 1, 1, 0)),
style.AttrMinimumSize { X: 19, Y: 19 },
),
Focused: style.AS (
style.AttrBorder {
outline,
tomo.Border {
Width: tomo.I(1),
Color: borderColorFocused,
},
},
style.AttrPadding(tomo.I(0)),
),
},
// *.LabelCheckbox[*]
style.Rule {
Role: tomo.R("", "LabelCheckbox", ""),
Default: style.AS (
style.AttrGap { X: 8, Y: 8 },
),
},
// *.MenuItem[*]
style.Rule {
Role: tomo.R("", "MenuItem", ""),
Default: style.AS (
style.AttrPadding(tomo.I(4)),
style.AttrGap { X: 4, Y: 4 },
style.AttrColor { Color: color.Transparent },
),
Hovered: style.AS (
style.AttrColor { Color: tomo.ColorAccent },
),
Focused: style.AS (
style.AttrColor { Color: tomo.ColorAccent },
),
},
// *.File[*]
style.Rule {
Role: tomo.R("", "File", ""),
Default: style.AS (
style.AttrColor { Color: color.Transparent },
),
Focused: style.AS (
style.AttrColor { Color: tomo.ColorAccent },
),
},
// *.TearLine[*]
style.Rule {
Role: tomo.R("", "TearLine", ""),
Default: style.AS (
style.AttrBorder {
tomo.Border {
Width: tomo.I(3),
Color: [4]color.Color {
color.Transparent,
color.Transparent,
color.Transparent,
color.Transparent,
},
},
},
style.AttrColor { Color: tomo.ColorForeground },
style.AttrPadding(tomo.I(1, 0, 0, 1)),
),
Hovered: style.AS (
style.AttrBorder {
tomo.Border {
Width: tomo.I(3),
Color: borderColorFocused,
},
},
),
Focused: style.AS (
style.AttrBorder {
tomo.Border {
Width: tomo.I(3),
Color: borderColorFocused,
},
},
),
},
}

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package fallbackStyle
import "image/color"
import "git.tebibyte.media/tomo/tomo"
import "git.tebibyte.media/tomo/nasin/internal/style"
// New returns Wintergreen, the default Tomo style. It is neutral-gray with
// green and turquoise accents.
func New () *style.Style {
return &style.Style {
Colors: map[tomo.Color] color.Color {
tomo.ColorBackground: colorBackground,
tomo.ColorForeground: colorForeground,
tomo.ColorRaised: colorCarved,
tomo.ColorSunken: colorCarved,
tomo.ColorAccent: colorFocus,
},
Rules: rules,
}
}

24
internal/style/missing.go Normal file
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package style
import "image"
import "image/color"
type missingTexture int
func (texture missingTexture) ColorModel () color.Model {
return color.RGBAModel
}
func (texture missingTexture) Bounds () image.Rectangle {
return image.Rect(0, 0, int(texture), int(texture))
}
func (texture missingTexture) At (x, y int) color.Color {
x /= 8
y /= 8
if (x + y) % 2 == 0 {
return color.RGBA { R: 0xFF, B: 0xFF, A: 0xFF }
} else {
return color.RGBA { A: 0xFF }
}
}

239
internal/style/style.go Normal file
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// Package style provides a data-driven style implementation.
package style
import "image"
import "image/color"
import "git.tebibyte.media/tomo/tomo"
import "git.tebibyte.media/tomo/tomo/event"
import "git.tebibyte.media/tomo/tomo/input"
import "git.tebibyte.media/tomo/tomo/canvas"
// this is CSS's bastard child
// Style allows the use of data to define a visual style.
type Style struct {
// Textures maps texture names to image textures.
Textures map[string] image.Image
textures map[string] canvas.TextureCloser // private texture cache
missing canvas.TextureCloser // cache for "missing" texture
// Rules determines which styles get applied to which Objects.
Rules []Rule
// Colors maps tomo.Color values to color.RGBA values.
Colors map[tomo.Color] color.Color
}
// Rule describes under what circumstances should certain style attributes be
// active.
type Rule struct {
Role tomo.Role
Default AttrSet
Hovered AttrSet
Pressed AttrSet
Focused AttrSet
}
// AttrSet is a set of attributes wherein only one/zero of each attribute type
// can exist. I deserve to be imprisoned for the way I made this work (look in
// attribute.go). Its zero value can be used safely, and you can copy it if you
// want, but it will point to the same set of attributes.
type AttrSet struct {
set map[int] Attr
}
// AS builds an AttrSet out of a vararg list of Attr values.
func AS (attrs ...Attr) AttrSet {
set := AttrSet { }
set.Add(attrs...)
return set
}
// Add adds attributes to the set.
func (this *AttrSet) Add (attrs ...Attr) {
this.ensure()
for _, attr := range attrs {
this.set[attr.attr()] = attr
}
}
// MergeUnder takes attributes from another set and adds them if they don't
// already exist in this one.
func (this *AttrSet) MergeUnder (other AttrSet) {
this.ensure()
if other.set == nil { return }
for _, attr := range other.set {
if _, exists := this.set[attr.attr()]; !exists {
this.Add(attr)
}
}
}
// MergeOver takes attributes from another set and adds them, overriding this
// one.
func (this *AttrSet) MergeOver (other AttrSet) {
this.ensure()
if other.set == nil { return }
for _, attr := range other.set {
this.Add(attr)
}
}
func (this *AttrSet) ensure () {
if this.set == nil { this.set = make(map[int] Attr) }
}
func (this *Style) execute (object tomo.Object, set AttrSet) {
box := object.GetBox()
for _, attr := range set.set {
switch attr := attr.(type) {
case AttrColor:
box.SetColor(attr.Color)
case AttrTexture:
box.SetTextureTile(this.texture(string(attr)))
case AttrBorder:
box.SetBorder([]tomo.Border(attr)...)
case AttrMinimumSize:
box.SetMinimumSize(image.Point(attr))
case AttrPadding:
box.SetPadding(tomo.Inset(attr))
case AttrGap:
if box, ok := box.(tomo.ContainerBox); ok {
box.SetGap(image.Point(attr))
}
case AttrTextColor:
if box, ok := box.(tomo.TextBox); ok {
box.SetTextColor(attr.Color)
}
case AttrDotColor:
if box, ok := box.(tomo.TextBox); ok {
box.SetDotColor(attr.Color)
}
case AttrFace:
if box, ok := box.(tomo.TextBox); ok {
box.SetFace(attr)
}
case AttrAlign:
if box, ok := box.(tomo.ContentBox); ok {
box.SetAlign(attr.X, attr.Y)
}
default:
panic("bug: nasin/internal/tomo.Theme: unexpected attribute")
}
}
}
func (this *Style) texture (name string) canvas.Texture {
this.ensureTextureCache()
if texture, ok := this.textures[name]; ok {
return texture
}
if this.Textures == nil {
if source, ok := this.Textures[name]; ok {
texture := tomo.NewTexture(source)
this.textures[name] = texture
return texture
}
}
return this.missingTexture()
}
func (this *Style) missingTexture () canvas.Texture {
if this.missing == nil {
this.missing = tomo.NewTexture(missingTexture(16))
}
return this.missing
}
func (this *Style) ensureTextureCache () {
if this.textures == nil { this.textures = make(map[string] canvas.TextureCloser) }
}
// setsFor builds flattened attr sets for a specific role based on the rules list
func (this *Style) setsFor (role tomo.Role) (defaul, hovered, pressed, focused AttrSet) {
for _, current := range this.Rules {
// check for a match
packageMatch := current.Role.Package == role.Package || current.Role.Package == ""
objectMatch := current.Role.Object == role.Object || current.Role.Object == ""
variantMatch := current.Role.Variant == role.Variant || current.Role.Variant == ""
if packageMatch && objectMatch && variantMatch {
// if found, merge and override
defaul.MergeOver(current.Default)
hovered.MergeOver(current.Hovered)
pressed.MergeOver(current.Pressed)
focused.MergeOver(current.Focused)
}
}
// hovered and pressed are mutually exclusive states, so we compress
// them with the default state.
hovered.MergeUnder(defaul)
pressed.MergeUnder(defaul)
return defaul, hovered, pressed, focused
}
func (this *Style) Apply (object tomo.Object) event.Cookie {
pressed := false
hovered := false
box := object.GetBox()
role := box.Role()
defaultSet, hoveredSet, pressedSet, focusedSet := this.setsFor(role)
updateStyle := func () {
if pressed {
this.execute(object, pressedSet)
} else if hovered {
this.execute(object, hoveredSet)
} else {
this.execute(object, defaultSet)
}
if box.Focused() && !pressed {
this.execute(object, focusedSet)
}
}
updateStyle()
return event.MultiCookie (
box.OnFocusEnter(updateStyle),
box.OnFocusLeave(updateStyle),
box.OnMouseDown(func (button input.Button) {
if button != input.ButtonLeft { return }
pressed = true
updateStyle()
}),
box.OnMouseUp(func (button input.Button) {
if button != input.ButtonLeft { return }
pressed = false
updateStyle()
}),
box.OnMouseEnter(func () {
hovered = true
updateStyle()
}),
box.OnMouseLeave(func () {
hovered = false
updateStyle()
}))
}
func (this *Style) RGBA (c tomo.Color) (r, g, b, a uint32) {
if this.Colors == nil { return 0xFFFF, 0, 0xFFFF, 0xFFFF }
color, ok := this.Colors[c]
if !ok { return 0xFFFF, 0, 0xFFFF, 0xFFFF }
return color.RGBA()
}
// Close closes all cached textures this style has open. Do not call this while
// the style is in use.
func (this *Style) Close () error {
this.missing.Close()
this.missing = nil
for _, texture := range this.textures {
texture.Close()
}
this.textures = nil
return nil
}