Hi, while porting Xournal to Maemo I decided to give it as much hildonization is possible. Base xournal uses only a bunch of predefined colors (something like 9 or 10 colors).
I decided to use the hildon_color_button widget to give the user a much wide choice of colors. I get the GdkColor from the color button and have to convert it in RGBA because Xournal only works with those values (passing "fill-color-rgba" to the canvas items). It does this, I think, for being able to make a highlighter tool available in different colors (by making use of the alpha channel). anyway, I convert the GdkColor to RGBA using the macro: GdkColor *color; // read from the hildon_color widget guint alpha = 0xFF; // no transparency guint rgba = GNOME_CANVAS_COLOR_A (color->red, color->green, color->blue, alpha) and then use it wherever it is needed. This works for the predefined colors in the color chooser dialog. But if I choose my own custom color it does not. If I use the GdkColor as is (thus passing "fill-color-gdk" to the canvas items), it works, but I can't use the alpha channel (can I ?). If I convert this custom color to RGBA with the given macro, it paints in a totally different color. Is this some issue with the colormap ? Is GNOME_CANVAS_COLOR_A not good for this ? Any other hints ? -- anidel
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