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#include "desktop.h"
#include "string.h"
#include <stddef.h>
static desktop_vtable_t const desktop_vtable = {
{
{
desktop_draw,
composite_widget_get_focus,
widget_model_to_screen,
widget_contains_coordinate,
desktop_on_mouse_down,
desktop_on_mouse_up,
desktop_on_mouse_move,
desktop_on_key_down,
composite_widget_on_key_up
},
composite_widget_add_child
}
};
void desktop_init( desktop_t *desktop, const int w, const int h, const vga_color_t background_color )
{
memset( desktop, 0, sizeof( desktop_t ) );
composite_widget_init( &desktop->base, NULL, 0, 0, w, h, background_color );
desktop->mouse_x = w / 2;
desktop->mouse_y = h / 2;
desktop->needs_redrawing = true;
((widget_t *)desktop)->vtable = (widget_vtable_t *)&desktop_vtable;
}
void desktop_draw( void *obj, graphics_context_t *context )
{
desktop_t *desktop = obj;
if( !desktop->needs_redrawing ) {
return;
}
vga_clear_screen( context, desktop->base.base.background_color );
composite_widget_draw( obj, context );
for( int i = 0; i < 4; i++ ) {
if( desktop->mouse_x > i ) {
vga_set_pixel( context, desktop->mouse_x - i, desktop->mouse_y, VGA_COLOR_WHITE );
}
if( desktop->mouse_x < context->mode->base.x - i ) {
vga_set_pixel( context, desktop->mouse_x + i, desktop->mouse_y, VGA_COLOR_WHITE );
}
if( desktop->mouse_y > i ) {
vga_set_pixel( context, desktop->mouse_x, desktop->mouse_y - i, VGA_COLOR_WHITE );
}
if( desktop->mouse_y < context->mode->base.y - i ) {
vga_set_pixel( context, desktop->mouse_x, desktop->mouse_y + i, VGA_COLOR_WHITE );
}
}
desktop->needs_redrawing = false;
}
void desktop_on_mouse_down( void *obj, const int x, const int y )
{
desktop_t *desktop = obj;
composite_widget_on_mouse_down( obj, x, y );
desktop->needs_redrawing = true;
}
void desktop_on_mouse_up( void *obj, const int x, const int y )
{
desktop_t *desktop = obj;
composite_widget_on_mouse_up( obj, x, y );
desktop->needs_redrawing = true;
}
void desktop_on_mouse_move( void *obj, const int old_x, const int old_y, const int x, const int y )
{
desktop_t *desktop = obj;
desktop->mouse_x = x;
desktop->mouse_y = y;
composite_widget_on_mouse_move( obj, old_x, old_y, x, y );
desktop->needs_redrawing = true;
}
void desktop_on_key_down( void *obj, char c )
{
desktop_t *desktop = obj;
composite_widget_on_key_down( obj, c );
desktop->needs_redrawing = true;
}
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