mirror of
https://github.com/TTimo/GtkRadiant.git
synced 2025-01-10 12:01:10 +00:00
93 lines
2.2 KiB
C++
93 lines
2.2 KiB
C++
|
|
#if !defined ( INCLUDED_XORRECTANGLE_H )
|
|
#define INCLUDED_XORRECTANGLE_H
|
|
|
|
#include <gtk/gtkwidget.h>
|
|
#include "math/vector.h"
|
|
|
|
class rectangle_t
|
|
{
|
|
public:
|
|
rectangle_t()
|
|
: x( 0 ), y( 0 ), w( 0 ), h( 0 )
|
|
{}
|
|
rectangle_t( float _x, float _y, float _w, float _h )
|
|
: x( _x ), y( _y ), w( _w ), h( _h )
|
|
{}
|
|
float x;
|
|
float y;
|
|
float w;
|
|
float h;
|
|
};
|
|
|
|
struct Coord2D
|
|
{
|
|
float x, y;
|
|
Coord2D( float _x, float _y )
|
|
: x( _x ), y( _y ){
|
|
}
|
|
};
|
|
|
|
inline Coord2D coord2d_device2screen( const Coord2D& coord, unsigned int width, unsigned int height ){
|
|
return Coord2D( ( ( coord.x + 1.0f ) * 0.5f ) * width, ( ( coord.y + 1.0f ) * 0.5f ) * height );
|
|
}
|
|
|
|
inline rectangle_t rectangle_from_area( const float min[2], const float max[2], unsigned int width, unsigned int height ){
|
|
Coord2D botleft( coord2d_device2screen( Coord2D( min[0], min[1] ), width, height ) );
|
|
Coord2D topright( coord2d_device2screen( Coord2D( max[0], max[1] ), width, height ) );
|
|
return rectangle_t( botleft.x, botleft.y, topright.x - botleft.x, topright.y - botleft.y );
|
|
}
|
|
|
|
class XORRectangle
|
|
{
|
|
|
|
rectangle_t m_rectangle;
|
|
|
|
GtkWidget* m_widget;
|
|
GdkGC* m_gc;
|
|
|
|
bool initialised() const {
|
|
return m_gc != 0;
|
|
}
|
|
void lazy_init(){
|
|
if ( !initialised() ) {
|
|
m_gc = gdk_gc_new( m_widget->window );
|
|
|
|
GdkColor color = { 0, 0xffff, 0xffff, 0xffff, };
|
|
GdkColormap* colormap = gdk_window_get_colormap( m_widget->window );
|
|
gdk_colormap_alloc_color( colormap, &color, FALSE, TRUE );
|
|
gdk_gc_copy( m_gc, m_widget->style->white_gc );
|
|
gdk_gc_set_foreground( m_gc, &color );
|
|
gdk_gc_set_background( m_gc, &color );
|
|
|
|
gdk_gc_set_function( m_gc, GDK_INVERT );
|
|
}
|
|
}
|
|
void draw() const {
|
|
const int x = float_to_integer( m_rectangle.x );
|
|
const int y = float_to_integer( m_rectangle.y );
|
|
const int w = float_to_integer( m_rectangle.w );
|
|
const int h = float_to_integer( m_rectangle.h );
|
|
gdk_draw_rectangle( m_widget->window, m_gc, FALSE, x, -( h ) - ( y - m_widget->allocation.height ), w, h );
|
|
}
|
|
|
|
public:
|
|
XORRectangle( GtkWidget* widget ) : m_widget( widget ), m_gc( 0 ){
|
|
}
|
|
~XORRectangle(){
|
|
if ( initialised() ) {
|
|
gdk_gc_unref( m_gc );
|
|
}
|
|
}
|
|
void set( rectangle_t rectangle ){
|
|
if ( GTK_WIDGET_REALIZED( m_widget ) ) {
|
|
lazy_init();
|
|
draw();
|
|
m_rectangle = rectangle;
|
|
draw();
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
#endif
|