adam-gui/vendor/fyne.io/fyne/v2/test/markup_renderer.go

504 lines
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Go
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2024-04-29 19:13:50 +02:00
package test
import (
"fmt"
"image/color"
"reflect"
"sort"
"strings"
"unsafe"
"fyne.io/fyne/v2"
"fyne.io/fyne/v2/canvas"
col "fyne.io/fyne/v2/internal/color"
"fyne.io/fyne/v2/internal/driver"
"fyne.io/fyne/v2/layout"
"fyne.io/fyne/v2/theme"
)
type markupRenderer struct {
indentation int
w strings.Builder
}
// snapshot creates a new snapshot of the current render tree.
func snapshot(c fyne.Canvas) string {
r := markupRenderer{}
r.writeCanvas(c)
return r.w.String()
}
func (r *markupRenderer) setAlignmentAttr(attrs map[string]*string, name string, a fyne.TextAlign) {
var value string
switch a {
case fyne.TextAlignLeading:
// default mode, dont add an attr
case fyne.TextAlignCenter:
value = "center"
case fyne.TextAlignTrailing:
value = "trailing"
default:
value = fmt.Sprintf("unknown alignment: %d", a)
}
r.setStringAttr(attrs, name, value)
}
func (r *markupRenderer) setBoolAttr(attrs map[string]*string, name string, b bool) {
if !b {
return
}
attrs[name] = nil
}
func (r *markupRenderer) setColorAttr(attrs map[string]*string, name string, c color.Color) {
r.setColorAttrWithDefault(attrs, name, c, color.Transparent)
}
func (r *markupRenderer) setColorAttrWithDefault(attrs map[string]*string, name string, c color.Color, d color.Color) {
if c == nil || c == d {
return
}
if value := knownColor(c); value != "" {
r.setStringAttr(attrs, name, value)
return
}
for _, n := range theme.PrimaryColorNames() {
if c == theme.PrimaryColorNamed(n) {
r.setStringAttr(attrs, name, n)
return
}
}
rd, g, b, a := col.ToNRGBA(c)
r.setStringAttr(attrs, name, fmt.Sprintf("rgba(%d,%d,%d,%d)", uint8(rd), uint8(g), uint8(b), uint8(a)))
}
func (r *markupRenderer) setFillModeAttr(attrs map[string]*string, name string, m canvas.ImageFill) {
var fillMode string
switch m {
case canvas.ImageFillStretch:
// default mode, dont add an attr
case canvas.ImageFillContain:
fillMode = "contain"
case canvas.ImageFillOriginal:
fillMode = "original"
default:
fillMode = fmt.Sprintf("unknown fill mode: %d", m)
}
r.setStringAttr(attrs, name, fillMode)
}
func (r *markupRenderer) setFloatAttr(attrs map[string]*string, name string, f float64) {
r.setFloatAttrWithDefault(attrs, name, f, 0)
}
func (r *markupRenderer) setFloatAttrWithDefault(attrs map[string]*string, name string, f float64, d float64) {
if f == d {
return
}
value := fmt.Sprintf("%g", f)
attrs[name] = &value
}
func (r *markupRenderer) setFloatPosAttr(attrs map[string]*string, name string, x, y float64) {
if x == 0 && y == 0 {
return
}
value := fmt.Sprintf("%g,%g", x, y)
attrs[name] = &value
}
func (r *markupRenderer) setSizeAttrWithDefault(attrs map[string]*string, name string, i float32, d float32) {
if int(i) == int(d) {
return
}
value := fmt.Sprintf("%d", int(i))
attrs[name] = &value
}
func (r *markupRenderer) setPosAttr(attrs map[string]*string, name string, pos fyne.Position) {
if int(pos.X) == 0 && int(pos.Y) == 0 {
return
}
value := fmt.Sprintf("%d,%d", int(pos.X), int(pos.Y))
attrs[name] = &value
}
func (r *markupRenderer) setResourceAttr(attrs map[string]*string, name string, rsc fyne.Resource) {
if rsc == nil {
return
}
if value := knownResource(rsc); value != "" {
r.setStringAttr(attrs, name, value)
return
}
var variant string
switch t := rsc.(type) {
case *theme.DisabledResource:
variant = "disabled"
case *theme.ErrorThemedResource:
variant = "error"
case *theme.InvertedThemedResource:
variant = "inverted"
case *theme.PrimaryThemedResource:
variant = "primary"
case *theme.ThemedResource:
variant = string(t.ColorName)
if variant == "" {
variant = "default"
}
default:
r.setStringAttr(attrs, name, rsc.Name())
return
}
// Thats some magic to access the private `source` field of the themed resource.
v := reflect.ValueOf(rsc).Elem().Field(0)
src := reflect.NewAt(v.Type(), unsafe.Pointer(v.UnsafeAddr())).Elem().Interface().(fyne.Resource)
r.setResourceAttr(attrs, name, src)
r.setStringAttr(attrs, "themed", variant)
}
func (r *markupRenderer) setScaleModeAttr(attrs map[string]*string, name string, m canvas.ImageScale) {
var scaleMode string
switch m {
case canvas.ImageScaleSmooth:
// default mode, dont add an attr
case canvas.ImageScalePixels:
scaleMode = "pixels"
default:
scaleMode = fmt.Sprintf("unknown scale mode: %d", m)
}
r.setStringAttr(attrs, name, scaleMode)
}
func (r *markupRenderer) setSizeAttr(attrs map[string]*string, name string, size fyne.Size) {
value := fmt.Sprintf("%dx%d", int(size.Width), int(size.Height))
attrs[name] = &value
}
func (r *markupRenderer) setStringAttr(attrs map[string]*string, name string, s string) {
if s == "" {
return
}
attrs[name] = &s
}
func (r *markupRenderer) writeCanvas(c fyne.Canvas) {
attrs := map[string]*string{}
r.setSizeAttr(attrs, "size", c.Size())
if tc, ok := c.(WindowlessCanvas); ok {
r.setBoolAttr(attrs, "padded", tc.Padded())
}
r.writeTag("canvas", false, attrs)
r.w.WriteRune('\n')
r.indentation++
r.writeTag("content", false, nil)
r.w.WriteRune('\n')
r.indentation++
driver.WalkVisibleObjectTree(c.Content(), r.writeCanvasObject, r.writeCloseCanvasObject)
r.indentation--
r.writeIndent()
r.writeCloseTag("content")
for _, o := range c.Overlays().List() {
r.writeTag("overlay", false, nil)
r.w.WriteRune('\n')
r.indentation++
driver.WalkVisibleObjectTree(o, r.writeCanvasObject, r.writeCloseCanvasObject)
r.indentation--
r.writeIndent()
r.writeCloseTag("overlay")
}
r.indentation--
r.writeIndent()
r.writeCloseTag("canvas")
}
func (r *markupRenderer) writeCanvasObject(obj fyne.CanvasObject, _, _ fyne.Position, _ fyne.Size) bool {
attrs := map[string]*string{}
r.setPosAttr(attrs, "pos", obj.Position())
r.setSizeAttr(attrs, "size", obj.Size())
switch o := obj.(type) {
case *canvas.Circle:
r.writeCircle(o, attrs)
case *canvas.Image:
r.writeImage(o, attrs)
case *canvas.Line:
r.writeLine(o, attrs)
case *canvas.LinearGradient:
r.writeLinearGradient(o, attrs)
case *canvas.RadialGradient:
r.writeRadialGradient(o, attrs)
case *canvas.Raster:
r.writeRaster(o, attrs)
case *canvas.Rectangle:
r.writeRectangle(o, attrs)
case *canvas.Text:
r.writeText(o, attrs)
case *fyne.Container:
r.writeContainer(o, attrs)
case fyne.Widget:
r.writeWidget(o, attrs)
case *layout.Spacer:
r.writeSpacer(o, attrs)
default:
panic(fmt.Sprint("please add support for", reflect.TypeOf(o)))
}
return false
}
func (r *markupRenderer) writeCircle(c *canvas.Circle, attrs map[string]*string) {
r.setColorAttr(attrs, "fillColor", c.FillColor)
r.setColorAttr(attrs, "strokeColor", c.StrokeColor)
r.setFloatAttr(attrs, "strokeWidth", float64(c.StrokeWidth))
r.writeTag("circle", true, attrs)
}
func (r *markupRenderer) writeCloseCanvasObject(o fyne.CanvasObject, _ fyne.Position, _ fyne.CanvasObject) {
switch o.(type) {
case *fyne.Container:
r.indentation--
r.writeIndent()
r.writeCloseTag("container")
case fyne.Widget:
r.indentation--
r.writeIndent()
r.writeCloseTag("widget")
}
}
func (r *markupRenderer) writeCloseTag(name string) {
r.w.WriteString("</")
r.w.WriteString(name)
r.w.WriteString(">\n")
}
func (r *markupRenderer) writeContainer(c *fyne.Container, attrs map[string]*string) {
r.writeTag("container", false, attrs)
r.w.WriteRune('\n')
r.indentation++
}
func (r *markupRenderer) writeIndent() {
for i := 0; i < r.indentation; i++ {
r.w.WriteRune('\t')
}
}
func (r *markupRenderer) writeImage(i *canvas.Image, attrs map[string]*string) {
r.setStringAttr(attrs, "file", i.File)
r.setResourceAttr(attrs, "rsc", i.Resource)
if i.File == "" && i.Resource == nil {
r.setBoolAttr(attrs, "img", i.Image != nil)
}
r.setFloatAttr(attrs, "translucency", i.Translucency)
r.setFillModeAttr(attrs, "fillMode", i.FillMode)
r.setScaleModeAttr(attrs, "scaleMode", i.ScaleMode)
if i.Size().Width == theme.IconInlineSize() && i.Size().Height == i.Size().Width {
r.setStringAttr(attrs, "size", "iconInlineSize")
}
r.writeTag("image", true, attrs)
}
func (r *markupRenderer) writeLine(l *canvas.Line, attrs map[string]*string) {
r.setColorAttr(attrs, "strokeColor", l.StrokeColor)
r.setFloatAttrWithDefault(attrs, "strokeWidth", float64(l.StrokeWidth), 1)
r.writeTag("line", true, attrs)
}
func (r *markupRenderer) writeLinearGradient(g *canvas.LinearGradient, attrs map[string]*string) {
r.setColorAttr(attrs, "startColor", g.StartColor)
r.setColorAttr(attrs, "endColor", g.EndColor)
r.setFloatAttr(attrs, "angle", g.Angle)
r.writeTag("linearGradient", true, attrs)
}
func (r *markupRenderer) writeRadialGradient(g *canvas.RadialGradient, attrs map[string]*string) {
r.setColorAttr(attrs, "startColor", g.StartColor)
r.setColorAttr(attrs, "endColor", g.EndColor)
r.setFloatPosAttr(attrs, "centerOffset", g.CenterOffsetX, g.CenterOffsetY)
r.writeTag("radialGradient", true, attrs)
}
func (r *markupRenderer) writeRaster(rst *canvas.Raster, attrs map[string]*string) {
r.setFloatAttr(attrs, "translucency", rst.Translucency)
r.writeTag("raster", true, attrs)
}
func (r *markupRenderer) writeRectangle(rct *canvas.Rectangle, attrs map[string]*string) {
r.setColorAttr(attrs, "fillColor", rct.FillColor)
r.setColorAttr(attrs, "strokeColor", rct.StrokeColor)
r.setFloatAttr(attrs, "strokeWidth", float64(rct.StrokeWidth))
r.setFloatAttr(attrs, "radius", float64(rct.CornerRadius))
r.writeTag("rectangle", true, attrs)
}
func (r *markupRenderer) writeSpacer(_ *layout.Spacer, attrs map[string]*string) {
r.writeTag("spacer", true, attrs)
}
func (r *markupRenderer) writeTag(name string, isEmpty bool, attrs map[string]*string) {
r.writeIndent()
r.w.WriteRune('<')
r.w.WriteString(name)
for _, key := range sortedKeys(attrs) {
r.w.WriteRune(' ')
r.w.WriteString(key)
if attrs[key] != nil {
r.w.WriteString("=\"")
r.w.WriteString(*attrs[key])
r.w.WriteRune('"')
}
}
if isEmpty {
r.w.WriteString("/>\n")
} else {
r.w.WriteRune('>')
}
}
func (r *markupRenderer) writeText(t *canvas.Text, attrs map[string]*string) {
r.setColorAttrWithDefault(attrs, "color", t.Color, theme.ForegroundColor())
r.setAlignmentAttr(attrs, "alignment", t.Alignment)
r.setSizeAttrWithDefault(attrs, "textSize", t.TextSize, theme.TextSize())
r.setBoolAttr(attrs, "bold", t.TextStyle.Bold)
r.setBoolAttr(attrs, "italic", t.TextStyle.Italic)
r.setBoolAttr(attrs, "monospace", t.TextStyle.Monospace)
r.writeTag("text", false, attrs)
r.w.WriteString(t.Text)
r.writeCloseTag("text")
}
func (r *markupRenderer) writeWidget(w fyne.Widget, attrs map[string]*string) {
r.setStringAttr(attrs, "type", reflect.TypeOf(w).String())
r.writeTag("widget", false, attrs)
r.w.WriteRune('\n')
r.indentation++
}
func nrgbaColor(c color.Color) color.NRGBA {
// using ColorToNRGBA to avoid problems with colors with 16-bit components or alpha values that aren't 0 or the maximum possible alpha value
r, g, b, a := col.ToNRGBA(c)
return color.NRGBA{R: uint8(r), G: uint8(g), B: uint8(b), A: uint8(a)}
}
func knownColor(c color.Color) string {
return map[color.Color]string{
nrgbaColor(theme.BackgroundColor()): "background",
nrgbaColor(theme.ButtonColor()): "button",
nrgbaColor(theme.DisabledButtonColor()): "disabled button",
nrgbaColor(theme.DisabledColor()): "disabled",
nrgbaColor(theme.ErrorColor()): "error",
nrgbaColor(theme.FocusColor()): "focus",
nrgbaColor(theme.ForegroundColor()): "foreground",
nrgbaColor(theme.HoverColor()): "hover",
nrgbaColor(theme.InputBackgroundColor()): "inputBackground",
nrgbaColor(theme.InputBorderColor()): "inputBorder",
nrgbaColor(theme.MenuBackgroundColor()): "menuBackground",
nrgbaColor(theme.OverlayBackgroundColor()): "overlayBackground",
nrgbaColor(theme.PlaceHolderColor()): "placeholder",
nrgbaColor(theme.PrimaryColor()): "primary",
nrgbaColor(theme.ScrollBarColor()): "scrollbar",
nrgbaColor(theme.SelectionColor()): "selection",
nrgbaColor(theme.ShadowColor()): "shadow",
}[nrgbaColor(c)]
}
func knownResource(rsc fyne.Resource) string {
return map[fyne.Resource]string{
theme.CancelIcon(): "cancelIcon",
theme.CheckButtonCheckedIcon(): "checkButtonCheckedIcon",
theme.CheckButtonIcon(): "checkButtonIcon",
theme.ColorAchromaticIcon(): "colorAchromaticIcon",
theme.ColorChromaticIcon(): "colorChromaticIcon",
theme.ColorPaletteIcon(): "colorPaletteIcon",
theme.ComputerIcon(): "computerIcon",
theme.ConfirmIcon(): "confirmIcon",
theme.ContentAddIcon(): "contentAddIcon",
theme.ContentClearIcon(): "contentClearIcon",
theme.ContentCopyIcon(): "contentCopyIcon",
theme.ContentCutIcon(): "contentCutIcon",
theme.ContentPasteIcon(): "contentPasteIcon",
theme.ContentRedoIcon(): "contentRedoIcon",
theme.ContentRemoveIcon(): "contentRemoveIcon",
theme.ContentUndoIcon(): "contentUndoIcon",
theme.DeleteIcon(): "deleteIcon",
theme.DocumentCreateIcon(): "documentCreateIcon",
theme.DocumentIcon(): "documentIcon",
theme.DocumentPrintIcon(): "documentPrintIcon",
theme.DocumentSaveIcon(): "documentSaveIcon",
theme.DownloadIcon(): "downloadIcon",
theme.ErrorIcon(): "errorIcon",
theme.FileApplicationIcon(): "fileApplicationIcon",
theme.FileAudioIcon(): "fileAudioIcon",
theme.FileIcon(): "fileIcon",
theme.FileImageIcon(): "fileImageIcon",
theme.FileTextIcon(): "fileTextIcon",
theme.FileVideoIcon(): "fileVideoIcon",
theme.FolderIcon(): "folderIcon",
theme.FolderNewIcon(): "folderNewIcon",
theme.FolderOpenIcon(): "folderOpenIcon",
theme.FyneLogo(): "fyneLogo",
theme.HelpIcon(): "helpIcon",
theme.HistoryIcon(): "historyIcon",
theme.HomeIcon(): "homeIcon",
theme.InfoIcon(): "infoIcon",
theme.MailAttachmentIcon(): "mailAttachementIcon",
theme.MailComposeIcon(): "mailComposeIcon",
theme.MailForwardIcon(): "mailForwardIcon",
theme.MailReplyAllIcon(): "mailReplyAllIcon",
theme.MailReplyIcon(): "mailReplyIcon",
theme.MailSendIcon(): "mailSendIcon",
theme.MediaFastForwardIcon(): "mediaFastForwardIcon",
theme.MediaFastRewindIcon(): "mediaFastRewindIcon",
theme.MediaPauseIcon(): "mediaPauseIcon",
theme.MediaPlayIcon(): "mediaPlayIcon",
theme.MediaRecordIcon(): "mediaRecordIcon",
theme.MediaReplayIcon(): "mediaReplayIcon",
theme.MediaSkipNextIcon(): "mediaSkipNextIcon",
theme.MediaSkipPreviousIcon(): "mediaSkipPreviousIcon",
theme.MenuDropDownIcon(): "menuDropDownIcon",
theme.MenuDropUpIcon(): "menuDropUpIcon",
theme.MenuExpandIcon(): "menuExpandIcon",
theme.MenuIcon(): "menuIcon",
theme.MoveDownIcon(): "moveDownIcon",
theme.MoveUpIcon(): "moveUpIcon",
theme.NavigateBackIcon(): "navigateBackIcon",
theme.NavigateNextIcon(): "navigateNextIcon",
theme.QuestionIcon(): "questionIcon",
theme.RadioButtonCheckedIcon(): "radioButtonCheckedIcon",
theme.RadioButtonIcon(): "radioButtonIcon",
theme.SearchIcon(): "searchIcon",
theme.SearchReplaceIcon(): "searchReplaceIcon",
theme.SettingsIcon(): "settingsIcon",
theme.StorageIcon(): "storageIcon",
theme.ViewFullScreenIcon(): "viewFullScreenIcon",
theme.ViewRefreshIcon(): "viewRefreshIcon",
theme.ViewRestoreIcon(): "viewRestoreIcon",
theme.VisibilityIcon(): "visibilityIcon",
theme.VisibilityOffIcon(): "visibilityOffIcon",
theme.VolumeDownIcon(): "volumeDownIcon",
theme.VolumeMuteIcon(): "volumeMuteIcon",
theme.VolumeUpIcon(): "volumeUpIcon",
theme.WarningIcon(): "warningIcon",
theme.ZoomFitIcon(): "zoomFitIcon",
theme.ZoomInIcon(): "zoomInIcon",
theme.ZoomOutIcon(): "zoomOutIcon",
}[rsc]
}
func sortedKeys(m map[string]*string) []string {
keys := make([]string, 0, len(m))
for k := range m {
keys = append(keys, k)
}
sort.Strings(keys)
return keys
}