Visocor: Color Blind Compiz Plugin Code

--- a
+++ b/slicer.c
@@ -0,0 +1,192 @@
+
+/*----------------------------------------------------------------------------*\
+ | Copyright (C) 2009 - Rafael de O. Lopes Gonçalves and André Shoji Asato    |
+ | 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.                                                            |
+ |                                                                            |
+ | 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.                               |
+ |                                                                            |
+ | You should have received a copy of the GNU General Public License          |
+ | along with this program; if not, write to the Free Software                |
+ | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.|
+\*----------------------------------------------------------------------------*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "visocor.h"
+
+void visocorMousepollPositionUpdate(CompScreen *s, int x, int y) {
+	VISOCOR_SCREEN(s);
+
+	vs->mousePosX = x;
+	vs->mousePosY = y;
+}
+
+Bool visocorMousepollClickKeyInitiateSlice(CompDisplay *d,
+		CompAction *action, CompActionState state, CompOption *option,
+		int nOption) {
+	CompScreen *s;
+	Window xid;
+
+	xid = getIntOptionNamed(option, nOption, "root", 0);
+
+	s = findScreenAtDisplay(d, xid);
+
+	if (s) {
+		VISOCOR_SCREEN (s);
+		VISOCOR_DISPLAY (s->display);
+
+		if (otherScreenGrabExist(s, 0))
+			return FALSE;
+
+		if (state & CompActionStateInitButton)
+			action->state |= CompActionStateTermButton;
+
+		if (state & CompActionStateInitKey)
+			action->state |= CompActionStateTermKey;
+
+		if (visocorGetMousepollToggleBool(s->display) && !vs->pollHandle) {
+			(*vd->mousepollFunc->getCurrentPosition)(s, &vs->mousePosX,
+					&vs->mousePosY);
+			vs->pollHandle = (*vd->mousepollFunc->addPositionPolling)(s,
+					visocorMousepollPositionUpdate);
+		}
+
+	}
+
+	return TRUE;
+}
+
+Bool visocorMousepollClickKeyTerminateSlice(CompDisplay *d,
+		CompAction *action, CompActionState state, CompOption *option,
+		int nOption) {
+	CompScreen *s;
+	Window xid;
+	CompWindow * w;
+
+	xid = getIntOptionNamed(option, nOption, "root", 0);
+
+
+	for (s = d->screens; s; s = s->next) {
+		int i;
+		GLint viewport[4];
+		GLubyte color[3];
+		VISOCOR_SCREEN (s);
+		VISOCOR_DISPLAY (s->display);
+
+
+		if (xid && s->root != xid)
+			continue;
+
+		if (vs->pollHandle) {
+			(*vd->mousepollFunc->removePositionPolling)(s, vs->pollHandle);
+			vs->pollHandle = 0;
+		}
+		glGetIntegerv(GL_VIEWPORT, viewport);
+		glReadPixels(vs->mousePosX, viewport[3] - vs->mousePosY, 1, 1, GL_RGB,
+				GL_UNSIGNED_BYTE, (void *) color);
+		visocorPrintf(CompLogLevelDebug,
+				"pegou info da posicao:(%4d, %3d); (%f, %f, %f)",
+				vs->mousePosX, vs->mousePosY, vs->mouse_pixel[0],
+				vs->mouse_pixel[1], vs->mouse_pixel[2]);
+
+		for (i = 0; i < 3; i++) {
+			vs->mouse_pixel[i] = ((float) color[i]) / 255;
+		}
+	}
+
+	w = visocorFindWindow(d,option, nOption);
+	if (w) {
+		VISOCOR_WINDOW(w);
+		if(vw->currentState != SLICE) {
+			visocorToggleWindowToState(w, SLICE);
+		}else {
+			visocorToggleWindowToState(w, vw->lastState);
+		}
+		visocorPrintf(CompLogLevelDebug, "vw->state = %d\n", vw->currentState);
+	}
+
+	action->state &= ~(CompActionStateTermKey | CompActionStateTermButton);
+	return FALSE;
+}
+
+int getVisocorSlicerFragmentFunction(CompScreen * s, CompTexture * texture,
+		int param) {
+	float r_precision;
+	float g_precision;
+	float b_precision;
+
+	VISOCOR_SCREEN(s);
+
+
+	if (vs->visocorFunctions[SLICE][param] == 0) {
+		CompFunctionData *data;
+		int target;
+		char filter_operation[1024];
+		Bool ok = TRUE;
+
+		visocorPrintf(CompLogLevelDebug, "criando um SLICER com a variavel %d", param);
+		if (texture->target == GL_TEXTURE_2D)
+			target = COMP_FETCH_TARGET_2D;
+		else
+			target = COMP_FETCH_TARGET_RECT;
+
+		data = createFunctionData();
+		if (data) {
+			ok &= addTempHeaderOpToFunctionData(data, "tex");
+			ok &= addTempHeaderOpToFunctionData(data, "temp");
+			ok &= addFetchOpToFunctionData(data, "tex", NULL, target);
+			ok &= addTempHeaderOpToFunctionData(data, "test");
+			ok &= addTempHeaderOpToFunctionData(data, "dist");
+			ok &= addTempHeaderOpToFunctionData(data, "bw");
+			char * format = "SUB  dist, tex, program.env[%d];\n"
+				"MUL dist, dist, program.env[%d];\n"
+				"DP3 dist, dist, dist;\n"
+				"SUB test, 1.0 ,dist;\n"
+
+				/*cria o negativo*/
+				"DP3_SAT bw, tex, {0.2, 0.2, 0.2, 0};\n"
+				"SUB bw, 1, bw;\n"
+				/*testa onde substituir*/
+				"CMP temp, test, bw, tex;\n"
+				"MOV temp.a, tex.a;\n";
+
+			 sprintf(filter_operation, format, param, param  + 1);
+			visocorPrintf(CompLogLevelDebug, "%s\n", filter_operation);
+			ok &= addDataOpToFunctionData(data, filter_operation);
+
+		}
+
+		ok &= addColorOpToFunctionData(data, "output", "temp");
+		if (!ok) {
+			destroyFunctionData(data);
+			return 0;
+		}
+
+		vs->visocorFunctions[SLICE][param] = createFragmentFunction(s, "visocor", data);;
+	}
+	r_precision = visocorGetMaxdistancered(s);
+	g_precision = visocorGetMaxdistancegreen(s);
+	b_precision = visocorGetMaxdistanceblue(s);
+
+	(*s->programEnvParameter4f)(
+			GL_FRAGMENT_PROGRAM_ARB, param, vs->mouse_pixel[0],
+			vs->mouse_pixel[1], vs->mouse_pixel[2], 1.0f);
+
+
+	(*s->programEnvParameter4f)(
+			GL_FRAGMENT_PROGRAM_ARB, param + 1, r_precision, g_precision, b_precision, 0.0f);
+
+	visocorPrintf(CompLogLevelDebug, "slicer: r = %f\tg = %f\tb = %f", r_precision, g_precision, b_precision);
+
+	return vs->visocorFunctions[SLICE][param];
+
+
+}
+
+