scrollbars

1 files changed, 22 insertions, 1 deletions

diff --git a/gui.h b/gui.h
index 50927f4..5b3063b 100644
--- a/gui.h
+++ b/gui.h
@@ -10,7 +10,8 @@ struct Renderer;
 
 typedef enum {
 	gui_el_type_btn,
-	gui_el_type_scrollable
+	gui_el_type_scrollable,
+	gui_el_type_scrollbar
 } GUI_El_Type;
 
 typedef struct GUI_El {
@@ -27,8 +28,18 @@ typedef struct {
 
 typedef struct {
 	int x, y;
+	short grabbed[2];
+	short graboff[2];
 } GUI_Scroll_State;
 
+typedef struct {
+	GUI_El el;
+	GUI_Scroll_State* s;
+	Rect handle;
+	int h;
+	int hover, active;
+} GUI_Scrollbar;
+
 typedef void (*GUI_Scrollable_Draw_Fn)(
 	struct GUI*,
 	struct Renderer*,
@@ -40,6 +51,8 @@ typedef struct {
 	GUI_El el;
 	GUI_Scrollable_Draw_Fn draw;
 	GUI_Scroll_State* ss;
+	int cs[2];
+	int vp[2];
 } GUI_Scrollable;
 
 typedef struct GUI {
@@ -63,8 +76,16 @@ int gui_btn(GUI* g, Rect r, const char* text);
 void gui_scrollable(
 	GUI* g,
 	Rect r,
+	const int* cs,
 	GUI_Scroll_State* state,
 	GUI_Scrollable_Draw_Fn fn
 );
+void gui_scrollbar(
+	GUI* g,
+	GUI_Scroll_State* state,
+	Rect r,
+	int diff,
+	int horizontal
+);
 
 #endif