Use triangle strips instead of quads

[libs/gltk.git] / source / button.cpp

diff --git a/source/button.cpp b/source/button.cpp
index f6cf56c1f07ecbd8b0fa41a7b49e13d269b50156..86b73c9daa0c3f8ba9a689ebf628f102667c97f7 100644 (file)
--- a/source/button.cpp
+++ b/source/button.cpp
@@ -1,35 +1,81 @@
-/* $Id$
-
-This file is part of libmspgltk
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
+#include <msp/gl/meshbuilder.h>
 #include "button.h"
 #include "part.h"
+#include "style.h"
+
+using namespace std;
 
 namespace Msp {
 namespace GLtk {
 
-Button::Button(const Resources &r, const std::string &t):
-       Widget(r),
+Button::Button(const std::string &t):
+       text(),
+       icon(0),
        pressed(false)
 {
        set_text(t);
-       update_style();
+}
+
+void Button::autosize_special(const Part &part, Geometry &ageom) const
+{
+       if(part.get_name()=="text")
+               text.autosize(part, ageom);
+       else if(part.get_name()=="icon" && icon)
+       {
+               const Sides &margin = part.get_margin();
+               ageom.w = max(ageom.w, icon->get_width()+margin.left+margin.right);
+               ageom.h = max(ageom.h, icon->get_height()+margin.top+margin.bottom);
+       }
 }
 
 void Button::set_text(const std::string &t)
 {
-       text=t;
+       text = t;
+       signal_autosize_changed.emit();
+       rebuild();
+}
+
+void Button::set_icon(const GL::Texture2D *i)
+{
+       icon = i;
+       rebuild();
+}
+
+void Button::rebuild_special(const Part &part)
+{
+       if(part.get_name()=="text")
+               text.build(part, state, geom, part_cache);
+       if(part.get_name()=="icon")
+       {
+               if(icon)
+               {
+                       Geometry rgeom;
+                       rgeom.w = icon->get_width();
+                       rgeom.h = icon->get_height();
+                       part.get_alignment().apply(rgeom, geom, part.get_margin());
+
+                       GL::MeshBuilder bld(part_cache.create_mesh(part, *icon));
+                       bld.color(1.0f, 1.0f, 1.0f);
+                       bld.begin(GL::TRIANGLE_STRIP);
+                       bld.texcoord(0, 1);
+                       bld.vertex(rgeom.x, rgeom.y+rgeom.h);
+                       bld.texcoord(0, 0);
+                       bld.vertex(rgeom.x, rgeom.y);
+                       bld.texcoord(1, 1);
+                       bld.vertex(rgeom.x+rgeom.w, rgeom.y+rgeom.h);
+                       bld.texcoord(1, 0);
+                       bld.vertex(rgeom.x+rgeom.w, rgeom.y);
+                       bld.end();
+               }
+       }
 }
 
 void Button::button_press(int, int, unsigned btn)
 {
        if(btn==1)
        {
-               pressed=true;
-               state|=ACTIVE;
+               pressed = true;
+               set_state(ACTIVE);
        }
 }
 
@@ -37,11 +83,11 @@ void Button::button_release(int x, int y, unsigned btn)
 {
        if(pressed && btn==1)
        {
+               clear_state(ACTIVE);
+               pressed = false;
+
                if(geom.is_inside_relative(x, y))
                        signal_clicked.emit();
-               
-               state&=~ACTIVE;
-               pressed=false;
        }
 }
 
@@ -50,28 +96,27 @@ void Button::pointer_motion(int x, int y)
        if(pressed)
        {
                if(!geom.is_inside_relative(x, y))
-                       state&=~ACTIVE;
+                       clear_state(ACTIVE);
                else
-                       state|=ACTIVE;
+                       set_state(ACTIVE);
        }
 }
 
-void Button::render_special(const Part &part) const
+void Button::on_style_change()
 {
-       if(part.get_name()=="text")
-               render_text(part, text);
+       text.set_style(style);
 }
 
 
 Button::Loader::Loader(Button &btn):
-       Widget::Loader(btn)
+       DataFile::DerivedObjectLoader<Button, Widget::Loader>(btn)
 {
-       add("text", &Button::text);
+       add("text", &Loader::text);
 }
 
-Button &Button::Loader::get_object() const
+void Button::Loader::text(const std::string &t)
 {
-       return static_cast<Button &>(wdg);
+       obj.text = t;
 }
 
 } // namespace GLtk