From 1b7163e79c6f3b9bb77cf87ed2f4963fc2dbe661 Mon Sep 17 00:00:00 2001
From: Edouard DUPIN <yui.heero@gmail.com>
Date: Sun, 4 Nov 2012 19:04:59 +0100
Subject: [PATCH] [DEV] new button shader system ==> must be reworked

---
 share/theme/default/widgetButton.frag | 53 +++++++++++++++++++++++++++
 share/theme/default/widgetButton.prog |  2 +
 share/theme/default/widgetButton.vert | 17 +++++++++
 3 files changed, 72 insertions(+)
 create mode 100644 share/theme/default/widgetButton.frag
 create mode 100644 share/theme/default/widgetButton.prog
 create mode 100644 share/theme/default/widgetButton.vert

diff --git a/share/theme/default/widgetButton.frag b/share/theme/default/widgetButton.frag
new file mode 100644
index 00000000..19ccd797
--- /dev/null
+++ b/share/theme/default/widgetButton.frag
@@ -0,0 +1,53 @@
+#ifdef GL_ES
+precision mediump float;
+precision mediump int;
+#endif
+
+uniform float  EW_sizeBorder;
+uniform float  EW_sizePadding;
+uniform vec2   EW_size;
+uniform vec4   EW_posText;
+uniform int    EW_state;
+/*
+struct displayProperty {
+	vec4  colorBackGround;
+	vec4  colorForeGround;
+	vec4  colorBorder;
+	float sizeBorder;
+	vec2  sizePaddingOut;
+	vec2  sizePaddingIn;
+	
+};
+uniform displayProperty EW_buttonProperty;
+*/
+// transmit from the vertex shader
+varying vec2  v_position; // interpolated position ...
+// internal static define
+vec4  S_colorBg = vec4(0.0);
+vec4  S_colorFg = vec4(0.5,0.5,0.5,0.8);
+vec4  S_colorBorder = vec4(0.0,0.0,0.0,1.0);
+
+
+void main(void) {
+	float specialBorder = EW_sizeBorder+EW_sizePadding;
+	vec2  endStart = EW_size - vec2(EW_sizePadding) - vec2(EW_sizeBorder);
+	vec2  endStop  = EW_size - vec2(EW_sizePadding);
+	if(    v_position.x>  EW_sizePadding
+	    && v_position.y>  EW_sizePadding
+	    && v_position.x<= endStop.x
+	    && v_position.y<= endStop.y
+	  ) {
+		if(    v_position.x<= specialBorder
+		    || v_position.y<= specialBorder
+		    || v_position.x>  endStart.x
+		    || v_position.y>  endStart.y
+		  ) {
+			gl_FragColor = S_colorBorder;
+		} else {
+			gl_FragColor = S_colorFg;
+		}
+	} else {
+		gl_FragColor = S_colorBg;
+	}
+}
+
diff --git a/share/theme/default/widgetButton.prog b/share/theme/default/widgetButton.prog
new file mode 100644
index 00000000..a6c7b7f8
--- /dev/null
+++ b/share/theme/default/widgetButton.prog
@@ -0,0 +1,2 @@
+widgetButton.vert
+widgetButton.frag
\ No newline at end of file
diff --git a/share/theme/default/widgetButton.vert b/share/theme/default/widgetButton.vert
new file mode 100644
index 00000000..1b0652d7
--- /dev/null
+++ b/share/theme/default/widgetButton.vert
@@ -0,0 +1,17 @@
+#ifdef GL_ES
+precision mediump float;
+precision mediump int;
+#endif
+
+// Input :
+attribute vec2 EW_coord2d;
+uniform mat4   EW_MatrixTransformation;
+
+// output :
+varying vec2  v_position;       // This will be passed into the fragment shader.
+
+void main(void) {
+	gl_Position = EW_MatrixTransformation * vec4(EW_coord2d, 0.0, 1.0);
+	// transmit position of the curent element (intermolated ...)
+	v_position = EW_coord2d;
+}