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#include "composite_widget.h"
#include "string.h"
#include <stddef.h>
static composite_widget_vtable_t const composite_widget_vtable = {
{
composite_widget_draw,
composite_widget_get_focus,
widget_model_to_screen,
widget_contains_coordinate,
composite_widget_on_mouse_down,
composite_widget_on_mouse_up,
composite_widget_on_mouse_move,
composite_widget_on_key_down,
composite_widget_on_key_up
},
composite_widget_add_child
};
void composite_widget_init( composite_widget_t *widget, widget_t *parent, const int x, const int y, const int w, const int h, const vga_color_t background_color )
{
memset( widget, 0, sizeof( composite_widget_t ) );
widget_init( &widget->base, parent, x, y, w, h, background_color );
widget->nof_children = 0;
widget->focused_child = NULL;
memset( widget->children, 0, MAX_NOF_WIDGET_CHILDREN * sizeof( widget_t * ) );
((widget_t *)widget)->vtable = (widget_vtable_t *)&composite_widget_vtable;
}
void composite_widget_draw( void *obj, graphics_context_t *context )
{
composite_widget_t *widget = obj;
widget_draw( obj, context );
for( int i = widget->nof_children - 1; i >= 0; i-- ) {
widget_t *child = widget->children[i];
child->vtable->draw( child, context );
}
}
void composite_widget_get_focus( void *obj, widget_t *widget )
{
composite_widget_t *o = obj;
o->focused_child = widget;
widget_get_focus( o, widget );
}
void composite_widget_add_child( void *obj, widget_t *child )
{
composite_widget_t *widget = obj;
if( widget->nof_children >= MAX_NOF_WIDGET_CHILDREN ) {
// TODO: kernel_panic, but in an indirect way because
// the GUI framework should not depend on the kernel.
// Maybe something like a runtime context similar to
// the graphics context?
return;
}
widget->children[widget->nof_children++] = child;
}
void composite_widget_on_mouse_down( void *obj, const int x, const int y )
{
composite_widget_t *widget = obj;
for( int i = 0; i < widget->nof_children; i++ ) {
widget_t *child = widget->children[i];
if( child->vtable->contains_coordinate( child, x - widget->base.x, y - widget->base.y ) ) {
child->vtable->on_mouse_down( child, x - widget->base.x, y - widget->base.y );
break;
}
}
}
void composite_widget_on_mouse_up( void *obj, const int x, const int y )
{
composite_widget_t *widget = obj;
for( int i = 0; i < widget->nof_children; i++ ) {
widget_t *child = widget->children[i];
if( child->vtable->contains_coordinate( child, x - widget->base.x, y - widget->base.y ) ) {
child->vtable->on_mouse_up( child, x - widget->base.x, y - widget->base.y );
break;
}
}
}
void composite_widget_on_mouse_move( void *obj, const int old_x, const int old_y, const int x, const int y )
{
composite_widget_t *widget = obj;
widget_t *moved_out_from = NULL;
// TODO: have a mouse leave and mouse enter event instead
for( int i = 0; i < widget->nof_children; i++ ) {
widget_t *child = widget->children[i];
if( child->vtable->contains_coordinate( child, old_x - widget->base.x, old_y - widget->base.y ) ) {
child->vtable->on_mouse_move( child, old_x - widget->base.x, old_y - widget->base.y, x - widget->base.x, y - widget->base.y );
moved_out_from = child;
break;
}
}
for( int i = 0; i < widget->nof_children; i++ ) {
widget_t *child = widget->children[i];
if( child->vtable->contains_coordinate( child, x - widget->base.x, y - widget->base.y ) ) {
if( moved_out_from != NULL ) {
child->vtable->on_mouse_move( child, old_x - widget->base.x, old_y - widget->base.y, x - widget->base.x, y - widget->base.y );
break;
}
}
}
}
void composite_widget_on_key_down( void *obj, char c )
{
composite_widget_t *widget = obj;
if( widget->focused_child != NULL ) {
widget->focused_child->vtable->on_key_down( widget->focused_child, c );
}
}
void composite_widget_on_key_up( void *obj, char c )
{
composite_widget_t *widget = obj;
if( widget->focused_child != NULL ) {
widget->focused_child->vtable->on_key_up( widget->focused_child, c );
}
}
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