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/*
*
* Compiz magnifier plugin
*
* mag.h
*
* Copyright : (C) 2008 by Dennis Kasprzyk
* E-mail : onestone@opencompositing.org
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <cmath>
#include <core/core.h>
#include <composite/composite.h>
#include <opengl/opengl.h>
#include <mousepoll/mousepoll.h>
#include "mag_options.h"
#define MAG_SCREEN(s) \
MagScreen *ms = MagScreen::get (s)
class MagScreen :
public PluginClassHandler <MagScreen, CompScreen>,
public MagOptions,
public ScreenInterface,
public CompositeScreenInterface,
public GLScreenInterface
{
public:
MagScreen (CompScreen *screen);
~MagScreen ();
CompositeScreen *cScreen;
GLScreen *gScreen;
int posX;
int posY;
bool adjust;
GLfloat zVelocity;
GLfloat zTarget;
GLfloat zoom;
enum MagOptions::Mode mode;
GLuint texture;
GLenum target;
int width;
int height;
GLTexture::List overlay;
GLTexture::List mask;
CompSize overlaySize, maskSize;
GLuint program;
MousePoller poller;
void
preparePaint (int ms);
bool
glPaintOutput (const GLScreenPaintAttrib &attrib,
const GLMatrix &transform,
const CompRegion ®ion,
CompOutput *output,
unsigned int mask);
void
donePaint ();
void
cleanup ();
bool
loadFragmentProgram ();
bool
loadImages ();
void
optionChanged (CompOption *opt,
MagOptions::Options num);
void
damageRegion ();
void
positionUpdate (const CompPoint &pos);
int
adjustZoom (float chunk);
void
paintSimple ();
void
paintImage ();
void
paintFisheye ();
bool
terminate (CompAction *action,
CompAction::State state,
CompOption::Vector options);
bool
initiate (CompAction *action,
CompAction::State state,
CompOption::Vector options);
bool
zoomIn (CompAction *action,
CompAction::State state,
CompOption::Vector options);
bool
zoomOut (CompAction *action,
CompAction::State state,
CompOption::Vector options);
};
class MagPluginVTable :
public CompPlugin::VTableForScreen <MagScreen>
{
public:
bool init ();
};
static const char *fisheyeFpString =
"!!ARBfp1.0"
"PARAM p0 = program.env[0];"
"PARAM p1 = program.env[1];"
"PARAM p2 = program.env[2];"
"TEMP t0, t1, t2, t3;"
"SUB t1, p0.xyww, fragment.texcoord[0];"
"DP3 t2, t1, t1;"
"RSQ t2, t2.x;"
"SUB t0, t2, p0;"
"RCP t3, t2.x;"
"MAD t3, t3, p1.z, p2.z;"
"COS t3, t3.x;"
"MUL t3, t3, p1.w;"
"MUL t1, t2, t1;"
"MAD t1, t1, t3, fragment.texcoord[0];"
"CMP t1, t0.z, fragment.texcoord[0], t1;"
"MAD t1, t1, p1, p2;"
"TEX result.color, t1, texture[0], %s;"
"END";
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