moved opengl to demo directory

Makefile

@@ -16,7 +16,7 @@ CFLAGS += -Wswitch-default -Wundef -Wno-unused -Wstrict-overflow=5 -Wsign-conver
 CFLAGS += -Winit-self -Wstrict-aliasing -fsanitize=address -fsanitize=undefined -ftrapv
 CFLAGS += -Wswitch-enum -Winvalid-pch -Wbad-function-cast
 
-SRC = gui.c opengl.c
+SRC = gui.c demo/opengl.c
 OBJ = $(SRC:.c=.o)
 
 # Modes

demo/opengl.c

@@ -12,7 +12,7 @@
 #include <GL/glu.h>
 #include <SDL2/SDL.h>
 
-#include "gui.h"
+#include "../gui.h"
 
 /* macros */
 #define LEN(a) (sizeof(a)/sizeof(a)[0])
@@ -448,10 +448,8 @@ main(int argc, char *argv[])
         gui_begin_panel(ctx, subpanel, "Error",
             GUI_PANEL_HEADER|GUI_PANEL_BORDER|GUI_PANEL_MOVEABLE);
         gui_panel_layout(subpanel, 30, 2);
-        if (gui_panel_button_text(subpanel, "ok", 2, GUI_BUTTON_SWITCH))
-            break;
-        if (gui_panel_button_text(subpanel, "cancel", 6, GUI_BUTTON_SWITCH))
-            break;
+        if (gui_panel_button_text(subpanel, "ok", 2, GUI_BUTTON_SWITCH)) break;
+        if (gui_panel_button_text(subpanel, "cancel", 6, GUI_BUTTON_SWITCH)) break;
         gui_end_panel(ctx, subpanel, NULL);
         gui_end(ctx, &output, NULL);
         /* ---------------------------------------------------------*/

gui.c

@@ -5,6 +5,12 @@
 */
 #include "gui.h"
 
+#ifndef NDEBUG
+#include <assert.h>
+#else
+#define assert(expr)
+#endif
+
 #define NULL (void*)0
 #define UTF_INVALID 0xFFFD
 #define MAX_NUMBER_BUFFER 64
@@ -20,12 +26,6 @@
 #define ALIGNOF(t) ((char*)(&((struct {char c; t _h;}*)0)->_h) - (char*)0)
 #define ALIGN(x, mask) (void*)((gui_size)((gui_byte*)(x) + (mask-1)) & ~(mask-1))
 
-#ifndef NDEBUG
-#include <assert.h>
-#else
-#define assert(expr)
-#endif
-
 #define col_load(c,j,k,l,m) (c).r = (j), (c).g = (k), (c).b = (l), (c).a = (m)
 #define vec2_load(v,a,b) (v).x = (a), (v).y = (b)
 #define vec2_mov(to,from) (to).x = (from).x, (to).y = (from).y
@@ -303,6 +303,7 @@ gui_input_char(struct gui_input *in, const gui_glyph glyph)
 {
     gui_size len = 0;
     gui_long unicode;
+    assert(in);
     if (!in) return;
     len = utf_decode(glyph, &unicode, GUI_UTF_SIZE);
     if (len && ((in->text_len + len) < GUI_INPUT_MAX)) {
@@ -2459,13 +2460,13 @@ gui_panel_frame_end(struct gui_panel *tab)
     gui_panel_end(tab);
 }
 
-gui_uint
+void
 gui_panel_end(struct gui_panel *panel)
 {
     const struct gui_config *config;
     assert(panel);
-    if (!panel) return 0;
-    if (panel->flags & GUI_PANEL_HIDDEN) return 0;
+    if (!panel) return;
+    if (panel->flags & GUI_PANEL_HIDDEN) return;
     gui_pop_clip(panel->out);
     panel->at_y += panel->row_height;
 
@@ -2511,7 +2512,6 @@ gui_panel_end(struct gui_panel *panel)
         gui_draw_line(panel->out, panel->x + width, panel->y, panel->x + width,
                 padding_y, config->colors[GUI_COLOR_BORDER]);
     }
-    return GUI_OK;
 }
 
 struct gui_context*

gui.h

@@ -75,13 +75,6 @@ struct gui_input {
     struct gui_vec2 mouse_clicked_pos;
 };
 
-enum gui_error {
-    GUI_OK = 0x00,
-    GUI_ERROR_NOMEM = 0x01,
-    GUI_ERROR_INVAL = 0x02,
-    GUI_ERROR_INVOP = 0x04
-};
-
 struct gui_vertex {
     struct gui_vec2 pos;
     struct gui_texCoord uv;
@@ -444,7 +437,7 @@ gui_float gui_panel_list(struct gui_panel*, gui_bool *selected, const char *item
                     gui_size item_count, gui_float offset, gui_float item_height);
 void gui_panel_frame_begin(struct gui_panel *panel, struct gui_panel *tab, const char *title);
 void gui_panel_frame_end(struct gui_panel*);
-gui_uint gui_panel_end(struct gui_panel*);
+void gui_panel_end(struct gui_panel*);
 
 /* Context */
 struct gui_context;