Buttons

1 files changed, 49 insertions, 0 deletions

diff --git a/examples/ui.c b/examples/ui.c
index 95a3235..9f31550 100755
--- a/examples/ui.c
+++ b/examples/ui.c
@@ -366,6 +366,22 @@ void draw_text_area(u32 color, f64 x0, f64 y0, f64 width, f64 height, i64 num_ch
   print_text(color, x0, y0, scale_x, scale_y, num_chars, text);
 }
 
+void draw_panel(u32 color, f64 x0, f64 y0, f64 width, f64 height) {
+  i64 i0 = (i64) floor(x0 + .5);
+  i64 j0 = (i64) floor(y0 + .5);
+  i64 i1 = (i64) floor(x0 + width + .5);
+  i64 j1 = (i64) floor(y0 + height + .5);
+
+  if (i0 < 0) i0 = 0;
+  if (j0 < 0) j0 = 0;
+  if (i1 >= platform.frame_width)  i1 = platform.frame_width  - 1;
+  if (j1 >= platform.frame_height) j1 = platform.frame_height - 1;
+
+  for (i64 j = j0; j < j1; ++j)
+    for (i64 i = i0; i < i1; ++i)
+      platform.pixels[j * platform.frame_width + i] = color;
+}
+
 i32 main(i32 argc, c8 **argv) {
   (void) argc;
   (void) argv;
@@ -378,6 +394,10 @@ i32 main(i32 argc, c8 **argv) {
 
   p_init();
 
+  b8 button_0_down    = 0;
+  b8 button_1_down    = 0;
+  b8 button_1_checked = 0;
+
   while (!platform.done) {
     p_wait_events();
 
@@ -385,6 +405,35 @@ i32 main(i32 argc, c8 **argv) {
       for (i32 i = 0; i < platform.frame_width; ++i)
         platform.pixels[j * platform.frame_width + i] = 0x302000;
 
+    if (platform.cursor_x >= 40 && platform.cursor_x < 100 && platform.cursor_y >= 40 && platform.cursor_y < 100) {
+      button_0_down = platform.key_down[BUTTON_LEFT];
+      if (button_0_down)
+        draw_panel(0xffffff, 40, 40, 60, 60);
+      else
+        draw_panel(0x00ff00, 40, 40, 60, 60);
+    } else {
+      button_0_down = 0;
+      draw_panel(0x208020, 40, 40, 60, 60);
+    }
+
+    if (platform.cursor_x >= 40 && platform.cursor_x < 100 && platform.cursor_y >= 120 && platform.cursor_y < 180) {
+      button_1_down = platform.key_down[BUTTON_LEFT];
+      if (platform.key_pressed[BUTTON_LEFT])
+        button_1_checked = !button_1_checked;
+      if (button_1_down)
+        draw_panel(0xffffff, 40, 120, 60, 60);
+      else if (button_1_checked)
+        draw_panel(0xff8080, 40, 120, 60, 60);
+      else
+        draw_panel(0x80ff80, 40, 120, 60, 60);
+    } else {
+      button_1_down = 0;
+      if (button_1_checked)
+        draw_panel(0xff0000, 40, 120, 60, 60);
+      else
+        draw_panel(0x00ff00, 40, 120, 60, 60);
+    }
+
     i64 w  = platform.frame_width  / 2;
     i64 h  = platform.frame_height / 2;
     i64 x0 = w / 2;