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/*
* Copyright 2008-2010 NVIDIA Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include "glut_window.h"
namespace cusp
{
namespace opengl
{
namespace spy
{
/**
* @file glut_2d_canvas.h
*
* The main glut_2d_canvas window handler. This
* class provides some slightly higher-level functions
* above a GLUT window.
*/
class glut_2d_canvas
: public glut_window<glut_2d_canvas>
{
public:
glut_2d_canvas(int w, int h, const char* title);
// derived classes should override draw, not display
virtual void draw();
virtual void display();
virtual void reshape(int w, int h);
virtual void key(unsigned char key, int x, int y);
virtual void special_key(int key, int x, int y);
virtual void motion(int x, int y);
virtual void mouse_click(int button, int state, int x, int y);
virtual void menu(int value) {};
public:
// window properties
int width;
int height;
float natural_width;
float natural_height;
float zoom;
float trans_x;
float trans_y;
float center_x;
float center_y;
float aspect;
void set_natural_size(float w, float h)
{
natural_width = w;
natural_height = h;
glutPostRedisplay();
}
void set_center(float x, float y)
{
center_x = x;
center_y = y;
glutPostRedisplay();
}
void set_window_size(int w, int h)
{
glutSetWindow(glut_id);
glutReshapeWindow(w,h);
}
void set_zoom(float z)
{
zoom = z;
glutPostRedisplay();
}
void set_aspect(float a)
{
aspect = a;
}
void set_background_color(float r, float g, float b)
{ background_color[0]=r; background_color[1]=g; background_color[2]=b; }
protected:
enum {
STATE_NONE = 100,
STATE_MOVE,
STATE_ZOOM
} mouse_state;
// used by the mouse handler
int mouse_begin_x;
int mouse_begin_y;
float virtual_width;
float virtual_height;
void begin_mouse_click(int x, int y)
{
mouse_begin_x = x;
mouse_begin_y = y;
}
float background_color[3];
bool display_finished;
int frame;
};
} // end spy
} // end opengl
} // end cusp
#include <cusp/opengl/spy/detail/glut_2d_canvas.inl>
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