8e6dcc45e1
- per-control .go file, - separate file for style/property stuff, - added NumProperties enum to the list of properties for constraint checking, - should be no code changes
102 lines
3.8 KiB
Go
102 lines
3.8 KiB
Go
package raygui
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import (
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"fmt"
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"github.com/gen2brain/raylib-go/raylib"
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)
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// ComboBox draws a simplified version of a ComboBox allowing the user to select a string
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// from a list accompanied by an N/M counter. The widget does not provide a drop-down/completion
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// or any input support.
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func ComboBox(bounds rl.Rectangle, comboText []string, active int) int {
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// Reject invalid selections and disable rendering.
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comboCount := len(comboText)
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if active < 0 || active >= comboCount {
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rl.TraceLog(rl.LogWarning, "ComboBox active expects 0 <= active <= %d", comboCount)
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return -1
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}
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activeText := comboText[active]
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// style sizing.
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textHeight := int32(style[GlobalTextFontsize])
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textWidth := rl.MeasureText(activeText, textHeight)
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borderWidth := int32(style[ComboboxBorderWidth])
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textPadding := int32(style[ToggleTextPadding])
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b := bounds.ToInt32()
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if b.Width < textWidth {
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b.Width = textWidth + textPadding
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bounds.Width = float32(b.Width)
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}
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if b.Height < textHeight {
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b.Height = textHeight + textPadding
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bounds.Height = float32(b.Height)
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}
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// Identify what the counter is going to look like with max digits so we don't resize it.
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clickWidth := rl.MeasureText(fmt.Sprintf("%d/%d", comboCount, comboCount), b.Height)
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click := rl.NewRectangle(bounds.X+bounds.Width+float32(style[ComboboxPadding]), bounds.Y, float32(clickWidth), float32(b.Height))
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c := click.ToInt32()
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mousePoint := rl.GetMousePosition()
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state := Normal
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if rl.CheckCollisionPointRec(mousePoint, bounds) || rl.CheckCollisionPointRec(mousePoint, click) {
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if rl.IsMouseButtonDown(rl.MouseLeftButton) {
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state = Pressed
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} else if rl.IsMouseButtonReleased(rl.MouseLeftButton) || rl.IsMouseButtonPressed(rl.MouseLeftButton) {
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state = Pressed
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} else {
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state = Focused
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}
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}
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// Draw control
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var borderColor, insideColor, listColor, textColor rl.Color
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switch state {
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case Normal:
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borderColor = rl.GetColor(int32(style[ComboboxDefaultBorderColor]))
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insideColor = rl.GetColor(int32(style[ComboboxDefaultInsideColor]))
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listColor = rl.GetColor(int32(style[ComboboxDefaultListTextColor]))
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textColor = rl.GetColor(int32(style[ComboboxDefaultTextColor]))
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case Focused:
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borderColor = rl.GetColor(int32(style[ComboboxHoverBorderColor]))
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insideColor = rl.GetColor(int32(style[ComboboxHoverInsideColor]))
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listColor = rl.GetColor(int32(style[ComboboxHoverListTextColor]))
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textColor = rl.GetColor(int32(style[ComboboxHoverTextColor]))
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case Pressed:
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borderColor = rl.GetColor(int32(style[ComboboxPressedBorderColor]))
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insideColor = rl.GetColor(int32(style[ComboboxPressedInsideColor]))
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listColor = rl.GetColor(int32(style[ComboboxPressedListTextColor]))
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textColor = rl.GetColor(int32(style[ComboboxPressedTextColor]))
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default:
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rl.TraceLog(rl.LogWarning, "ComboBox in unrecognized state %d", state)
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return -1
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}
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// Render the box itself
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rl.DrawRectangle(b.X, b.Y, b.Width, b.Height, borderColor)
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rl.DrawRectangle(b.X+borderWidth, b.Y+borderWidth, b.Width-(2*borderWidth), b.Height-(2*borderWidth), insideColor)
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rl.DrawText(activeText, b.X+((b.Width/2)-(rl.MeasureText(activeText, textHeight)/2)), b.Y+((b.Height/2)-(textHeight/2)), textHeight, textColor)
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// Render the accompanying "clicks" box showing the element counter.
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rl.DrawRectangle(c.X, c.Y, c.Width, c.Height, borderColor)
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rl.DrawRectangle(c.X+borderWidth, c.Y+borderWidth, c.Width-(2*borderWidth), c.Height-(2*borderWidth), insideColor)
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companionText := fmt.Sprintf("%d/%d", active+1, comboCount)
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rl.DrawText(companionText, c.X+((c.Width/2)-(rl.MeasureText(companionText, textHeight)/2)), c.Y+((c.Height/2)-(textHeight/2)), textHeight, listColor)
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if rl.CheckCollisionPointRec(mousePoint, bounds) || rl.CheckCollisionPointRec(mousePoint, click) {
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if rl.IsMouseButtonPressed(rl.MouseLeftButton) {
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active++
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if active >= comboCount {
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active = 0
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}
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}
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}
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return active
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}
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