Aspect ratios in widgets

game/src/ui/uiman.c

@@ -26,7 +26,7 @@ uiman_init ()
   Widget *debug_menu = Widget_container_new (FALSE, 8, 4);
   Widget_set_background_image (debug_menu, RESTEX ("terrain4"));
   VEC2_SETI (debug_menu->position, 32, 32);
-  VEC2_SETI (debug_menu->size, 350, 150);
+  VEC2_SETI (debug_menu->size, 350, 170);
   debug_menu->border_width = 2;
   VEC4_SETI (debug_menu->border_color, 0, 0, 0, 1);
   Widget_add_child (ui_root, debug_menu);
@@ -36,7 +36,7 @@ uiman_init ()
   Widget_add_child_weighed (debug_menu, Widget_label_make_int ("Chunks rendered: %d", &n_frame_chunks, TEXT_ALIGN_LEFT), 1);
   Widget_add_child_weighed (debug_menu, Widget_label_make_int ("Entities rendered: %d", &n_frame_ents, TEXT_ALIGN_LEFT), 1);
 
-  Widget *poscont = Widget_container_new (TRUE, 0, 0);
+  Widget *poscont = Widget_container_new (TRUE, 0, 4);
   Widget_add_child_weighed (poscont, Widget_label_make_float ("X: %.1f", &camera_position[0], TEXT_ALIGN_LEFT), 1);
   Widget_add_child_weighed (poscont, Widget_label_make_float ("Y: %.1f", &camera_position[1], TEXT_ALIGN_CENTER), 1);
   Widget_add_child_weighed (poscont, Widget_label_make_float ("Z: %.1f", &camera_position[2], TEXT_ALIGN_RIGHT), 1);
@@ -46,6 +46,11 @@ uiman_init ()
 
   Widget_add_child_weighed (buttons, Widget_label_make_flag_switch_button ("Toggle wireframe", "wireframe_enabled"), 1);
   Widget_add_child_weighed (buttons, Widget_label_make_flag_switch_button ("Toggle flying", "flight_enabled"), 1);
+
+  Widget *square_button = Widget_label_make_flag_switch_button ("T", "");
+  square_button->aspect_ratio = 1.0;
+  Widget_add_child_weighed (buttons, square_button, 1);
+  
   Widget_add_child_weighed (debug_menu, buttons, 1);
 }
 

game/src/ui/widget.c

@@ -216,9 +216,23 @@ Widget_container_layout (Widget *parent, gboolean horizontal)
   float total_fixed = 0.0;
 
   Widget *child;
-  WIDGET_FOREACH_CHILD (parent, i, child) {
-    if (child->layout_weight == 0.0)
+  WIDGET_FOREACH_CHILD (parent, i, child)
     {
+      if (child->layout_weight == 0.0 || child->aspect_ratio > 0.0)
+	{
+	  if (horizontal)
+	    {
+	      float h = parent->size[1] - 2 * parent->container.padding;
+	      child->size[1] = h;
+	      child->size[0] = h * child->aspect_ratio;
+	    }
+	  else
+	    {
+	      float w = parent->size[0] - 2 * parent->container.padding;
+	      child->size[0] = w;
+	      child->size[1] = w / child->aspect_ratio;
+	    }
+
 	  total_fixed += horizontal ? child->size[0] : child->size[1];
 	}
       else
@@ -233,22 +247,55 @@ Widget_container_layout (Widget *parent, gboolean horizontal)
   float weights_size = total_weights > 0.0 ? (total_size - total_fixed) / total_weights : 0;
   float offset = parent->container.padding;
 
-  WIDGET_FOREACH_CHILD (parent, i, child) {
-    float size = (child->layout_weight == 0.0)
-      ? (horizontal ? child->size[0] : child->size[1])
-      : child->layout_weight * weights_size;
+  WIDGET_FOREACH_CHILD (parent, i, child)
+    {
+      float size;
+
+      if (child->layout_weight == 0.0 || child->aspect_ratio > 0.0)
+	{
+	  size = horizontal ? child->size[0] : child->size[1];
+	}
+      else
+	{
+	  size = child->layout_weight * weights_size;
+
+	  if (child->aspect_ratio > 0.0f)
+	    {
+	      if (horizontal)
+		{
+		  child->size[0] = size;
+		  child->size[1] = size / child->aspect_ratio;
+		}
+	      else
+		{
+		  child->size[1] = size;
+		  child->size[0] = size * child->aspect_ratio;
+		}
+	    }
+	  else
+	    {
+	      if (horizontal)
+		{
+		  child->size[0] = size;
+		  child->size[1] = parent->size[1] - 2 * parent->container.padding;
+		}
+	      else
+		{
+		  child->size[1] = size;
+		  child->size[0] = parent->size[0] - 2 * parent->container.padding;
+		}
+	    }
+	}
 
       if (horizontal)
 	{
 	  VEC2_SETI (child->position, parent->position[0] + offset,
 		     parent->position[1] + parent->container.padding);
-	VEC2_SETI (child->size, size, parent->size[1] - 2 * parent->container.padding);	
 	}
       else
 	{
 	  VEC2_SETI (child->position, parent->position[0] + parent->container.padding,
 		     parent->position[1] + offset);
-	VEC2_SETI (child->size, parent->size[0] - 2 * parent->container.padding, size);
 	}
     
       offset += size + parent->container.child_spacing;
@@ -301,8 +348,10 @@ Widget_render (Widget *widget, mat4 projection, int window_height)
   program_set_mat4 (RESPRG ("uiwidget"), "projection", projection);
 
   /* X, Y is the lower left corner of the box. */
-  glScissor (widget->position[0], window_height - widget->position[1]
-	     - widget->size[1], widget->size[0], widget->size[1]);
+  glScissor (floor (widget->position[0]),
+	     floor (window_height - widget->position[1] - widget->size[1]),
+	     ceil (widget->size[0]),
+	     ceil (widget->size[1]));
   
   SimpleMesh_render (&quad, FALSE);
 
@@ -384,11 +433,11 @@ Widget *
 Widget_label_make_flag_switch_button (const char *text, char *flag)
 {
   Widget *w = Widget_label_new (text, TEXT_ALIGN_CENTER);
-  VEC4_SETI (w->background_color, 1, 1, 1, 0.1);
-  VEC4_SETI (w->hovered_bg_color, 1, 1, 1, 0.2);
-  VEC4_SETI (w->clicked_bg_color, 1, 1, 1, 0.3);
-  w->border_width = 2;
-  VEC4_SETI (w->border_color, 1, 1, 1, 0.5);
+  VEC4_SETI (w->background_color, 0.3, 0.3, 0.3, 1.0);
+  VEC4_SETI (w->hovered_bg_color, 0.5, 0.5, 0.5, 1.0);
+  VEC4_SETI (w->clicked_bg_color, 0.7, 0.7, 0.7, 1.0);
+  w->border_width = 3;
+  VEC4_SETI (w->border_color, 0.8, 0.8, 0.8, 1.0);
   Widget_set_on_left_click (w, uicb_switch_flag, flag);
   return w;
 }

game/src/ui/widget.h

@@ -58,6 +58,7 @@ typedef struct Widget
   vec2 position;
   vec2 size;
   float layout_weight;
+  float aspect_ratio;
   
   vec4 background_color;
   vec4 hovered_bg_color;