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/* Color Selector
*
* GtkColorSelection lets the user choose a color. GtkColorSelectionDialog is
* a prebuilt dialog containing a GtkColorSelection.
*
*/
#include <gtkmm.h>
class Example_ColorSel : public Gtk::Window
{
public:
Example_ColorSel();
virtual ~Example_ColorSel();
protected:
//Signal handlers:
virtual void on_button_clicked();
//Member widgets:
Gtk::VBox m_VBox;
Gtk::Frame m_Frame;
Gtk::DrawingArea m_DrawingArea;
Gtk::Button m_Button;
Gdk::Color m_Color;
Gtk::Alignment m_Alignment;
};
//Called by DemoWindow;
Gtk::Window* do_colorsel()
{
return new Example_ColorSel();
}
Example_ColorSel::Example_ColorSel()
: m_VBox(false, 8),
m_Button("_Change the above color", true),
m_Alignment(Gtk::ALIGN_RIGHT, Gtk::ALIGN_BOTTOM, 0.0, 0.0)
{
set_title("Color Selection");
set_border_width(8);
m_VBox.set_border_width(8);
add(m_VBox);
/*
* Create the color swatch area
*/
m_Frame.set_shadow_type(Gtk::SHADOW_IN);
m_VBox.pack_start(m_Frame);
// set a fixed size
m_DrawingArea.set_size_request(200, 200);
// Unset the background pixmap (as used by pixmap themes)
// because it takes precedence over the background color.
m_DrawingArea.modify_bg_pixmap(Gtk::STATE_NORMAL, "<none>");
// set the color
m_Color.set_rgb(0, 0, 65535);
m_DrawingArea.modify_bg(Gtk::STATE_NORMAL, m_Color);
m_Frame.add(m_DrawingArea);
m_Alignment.add(m_Button);
m_VBox.pack_start(m_Alignment,Gtk::PACK_SHRINK);
m_Button.signal_clicked().connect(sigc::mem_fun(*this, &Example_ColorSel::on_button_clicked));
show_all();
}
Example_ColorSel::~Example_ColorSel()
{
}
void Example_ColorSel::on_button_clicked()
{
Gtk::ColorSelectionDialog dialog ("Changing color");
dialog.set_transient_for(*this);
Gtk::ColorSelection *const pColorSel = dialog.get_color_selection();
pColorSel->set_previous_color(m_Color);
pColorSel->set_current_color(m_Color);
pColorSel->set_has_palette();
const int response = dialog.run();
if(response == Gtk::RESPONSE_OK)
{
m_Color = pColorSel->get_current_color();
m_DrawingArea.modify_bg(Gtk::STATE_NORMAL, m_Color);
}
}
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