started the widget framework

2 files changed, 64 insertions, 0 deletions

diff --git a/src/gui/widget.c b/src/gui/widget.c
new file mode 100644
index 0000000..313fd49
--- /dev/null
+++ b/src/gui/widget.c
@@ -0,0 +1,35 @@
+#include "widget.h"
+
+#include "string.h"
+#include "stddef.h"
+
+static widget_vtable_t widget_vtable = {
+	widget_draw,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL
+};
+
+void widget_init( widget_t *widget, widget_t *parent, const int x, const int y, const int w, const int h )
+{
+	memset( widget, 0, sizeof( widget_t ) );
+
+	widget->parent = parent;
+	widget->x = x;
+	widget->y = y;
+	widget->w = w;
+	widget->h = h;
+
+	widget->vtable = &widget_vtable;
+}
+
+void widget_draw( void *obj, graphics_context_t *context )
+{
+	widget_t *widget = obj;
+
+	vga_draw_rectangle( context, widget->x, widget->y, widget->w, widget->h,
+		vga_make_RGB( 0xFF, 0xFF, 0xFF ) );
+}
diff --git a/src/gui/widget.h b/src/gui/widget.h
new file mode 100644
index 0000000..a1e9a21
--- /dev/null
+++ b/src/gui/widget.h
@@ -0,0 +1,29 @@
+#ifndef WIDGET_H
+#define WIDGET_H
+
+#include "graphics_context.h"
+
+typedef struct {
+	void (*draw)( void *obj, graphics_context_t *context );
+	void (*get_focus)( void *obj );
+	void (*widget_model_to_screen)( void *obj, int *x, int *y );
+	void (*on_mouse_down)( void *obj, const int x, const int y );
+	void (*on_mouse_up)( void *obj, const int x, const int y );
+	void (*on_mouse_move)( void *obj, const int old_x, const int old_y, const int x, const int y );
+	void (*on_key_down)( void *obj, char c );
+} widget_vtable_t;
+
+typedef struct widget_t {
+	int x;
+	int y;
+	int w;
+	int h;
+	struct widget_t *parent;
+	widget_vtable_t *vtable;
+} widget_t;
+
+void widget_init( widget_t *widget, widget_t *parent, const int x, const int y, const int w, const int h );
+
+void widget_draw( void *obj, graphics_context_t *context );
+
+#endif // WIDGET_H