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Use color picker to set color of smart bulbs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -19,4 +19,72 @@ | |
| * Authored by: Marius Meisenzahl <[email protected]> | ||
| */ | ||
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| public class Colors.HSB {} | ||
| public class Colors.HSB { | ||
| public uint16 hue; | ||
| public uint8 saturation; | ||
| public uint8 brightness; | ||
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| public HSB () {} | ||
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| public HSB.from_rgb (RGB rgb) { | ||
| double min, max, delta; | ||
| double h, s, b; | ||
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| double red = rgb.red / 255.0; | ||
| double green = rgb.green / 255.0; | ||
| double blue = rgb.blue / 255.0; | ||
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| min = red; | ||
| min = green < min ? green : min; | ||
| min = blue < min ? blue : min; | ||
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| max = red; | ||
| max = green > max ? green : max; | ||
| max = blue > max ? blue : max; | ||
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| b = max; | ||
| delta = max - min; | ||
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| if (max != 0) { | ||
| s = delta / max; | ||
| } else { | ||
| s = 0; | ||
| h = 0; | ||
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| hue = (uint16) (h + 0.5); | ||
| saturation = (uint8) (s * 100 + 0.5); | ||
| brightness = (uint8) (b * 100 + 0.5); | ||
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| return; | ||
| } | ||
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| if (max == min) { | ||
| h = 0; | ||
| s = 0; | ||
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| hue = (uint16) (h + 0.5); | ||
| saturation = (uint8) (s * 100 + 0.5); | ||
| brightness = (uint8) (b * 100 + 0.5); | ||
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| return; | ||
| } | ||
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| if (red == max) { | ||
| h = (green - blue) / delta; | ||
| } else if (green == max) { | ||
| h = 2 + (blue - red) / delta; | ||
| } else { | ||
| h = 4 + (red - green) / delta; | ||
| } | ||
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| h *= 60; | ||
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| if (h < 0) { | ||
| h += 360; | ||
| } | ||
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| hue = (uint16) (h + 0.5); | ||
| saturation = (uint8) (s * 100 + 0.5); | ||
| brightness = (uint8) (b * 100 + 0.5); | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| public class Widgets.ColorPicker: Gtk.DrawingArea { | ||
| private Gdk.RGBA color; | ||
| private Gtk.Window window; | ||
| private bool dialog_visible; | ||
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| public signal void on_color_change (Colors.RGB color); | ||
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| public ColorPicker (Gtk.Window window) { | ||
| this.window = window; | ||
| color.parse ("#4caf50"); | ||
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| set_size_request (140, 140); | ||
| add_events (Gdk.EventMask.ALL_EVENTS_MASK); | ||
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| button_press_event.connect ((event) => { | ||
| if (event.button == 1 && !dialog_visible) { | ||
| var dialog = new Gtk.ColorSelectionDialog (""); | ||
| unowned Gtk.ColorSelection widget = dialog.get_color_selection (); | ||
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| widget.current_rgba = color; | ||
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| dialog.deletable = false; | ||
| dialog.transient_for = window; | ||
| dialog_visible = true; | ||
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| if (dialog.run () == Gtk.ResponseType.OK) { | ||
| if (color != widget.current_rgba) { | ||
| color = widget.current_rgba; | ||
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| var rgb = new Colors.RGB (); | ||
| rgb.red = (uint8) (color.red * 255 + 0.5); | ||
| rgb.green = (uint8) (color.green * 255 + 0.5); | ||
| rgb.blue = (uint8) (color.blue * 255 + 0.5); | ||
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| on_color_change (rgb); | ||
| } | ||
| } | ||
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| dialog_visible = false; | ||
| dialog.close (); | ||
| } | ||
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| return true; | ||
| }); | ||
| } | ||
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| public override bool draw (Cairo.Context ctx) { | ||
| int width = get_allocated_width (); | ||
| int height = get_allocated_height (); | ||
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| // Draw an arc: | ||
| double xc = width / 2.0; | ||
| double yc = height / 2.0; | ||
| double radius = (int.min (width, height) / 2.0); | ||
| double angle1 = 0; | ||
| double angle2 = 2 * Math.PI; | ||
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| int shadow_width = 6; | ||
| double shadow_alpha = 1.0; | ||
| string shadow_color = "#A9A9A9"; | ||
| for (int i = 1; i <= shadow_width; i++) { | ||
| ctx.arc (xc, yc, radius - i, angle1, angle2); | ||
| Gdk.RGBA c = Gdk.RGBA(); | ||
| c.parse (shadow_color); | ||
| c.alpha = shadow_alpha / ((shadow_width - i + 1) * (shadow_width - i + 1)); | ||
| Gdk.cairo_set_source_rgba (ctx, c); | ||
| ctx.stroke (); | ||
| } | ||
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| ctx.arc (xc, yc, radius - shadow_width, angle1, angle2); | ||
| Gdk.cairo_set_source_rgba (ctx, color); | ||
| ctx.fill (); | ||
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| return true; | ||
| } | ||
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| public Colors.RGB rgb { | ||
| set { | ||
| color.parse (value.to_hex ()); | ||
| } | ||
| } | ||
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| public Colors.HSB hsb { | ||
| set { | ||
| color.parse (new Colors.RGB.from_hsb (value).to_hex ()); | ||
| } | ||
| } | ||
| } |