Added KDE3 version of ksquirrel photo manager

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/ksquirrel@1094446 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 145 insertions, 0 deletions

diff --git a/ksquirrel/sq_glselectionpainter.cpp b/ksquirrel/sq_glselectionpainter.cpp
new file mode 100644
index 0000000..3d60389
--- /dev/null
+++ b/ksquirrel/sq_glselectionpainter.cpp
@@ -0,0 +1,145 @@
+/***************************************************************************
+                          sq_glselectionpainter.cpp  -  description
+                             -------------------
+    begin                : Apr 4 2007
+    copyright            : (C) 2007 by Baryshev Dmitry
+    email                : ksquirrel.iv@gmail.com
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   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.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#include <qbitmap.h>
+#include <qpainter.h>
+
+#include <cmath>
+
+#include "sq_glwidget.h"
+#include "sq_glselectionpainter.h"
+
+static const int len  = 4;
+static const int len2 = 10;
+static const int lenc = 2;
+static const int lenc2 = lenc / 2;
+static const double rad_const = 3.14159265358979323846 / 180.0;
+
+/* ******************************************************************* */
+
+SQ_GLSelectionPainter::SQ_GLSelectionPainter(SQ_GLWidget *widget) 
+    : w(widget), sourcew(1), sourceh(1), sw(0), sh(0), sx(0), sy(0), 
+      angle(0), m_valid(false), m_shown(false)
+{}
+
+SQ_GLSelectionPainter::~SQ_GLSelectionPainter()
+{}
+
+void SQ_GLSelectionPainter::begin(Type tp, int x, int y, bool U)
+{
+    // end previous drawing if any
+    end();
+
+    m_type = tp;
+
+    hackXY(x, y);
+
+    sx = xmoveold = x;
+    sy = ymoveold = y;
+    sw = 0;
+    sh = 0;
+
+    m_valid = true;
+    m_shown = true;
+
+    if(U) w->updateGLA();
+}
+
+void SQ_GLSelectionPainter::move(int x, int y)
+{
+    hackXY(x, y);
+
+    int X = QMAX(x, xmoveold);
+    int Y = QMIN(y, ymoveold);
+    int Xmin = QMIN(x, xmoveold);
+    int Ymin = QMAX(y, ymoveold);
+
+    sx = Xmin;
+    sy = Ymin;
+    sw = X - Xmin;
+    sh = Ymin - Y;
+
+    angle += 3;
+
+    if(angle > 360)
+        angle = 0;
+
+    // SQ_GLWidget::paintGL() will call draw()
+    w->updateGLA();
+}
+
+void SQ_GLSelectionPainter::end()
+{
+    m_valid = false;
+    m_shown = false;
+
+    w->updateGLA();
+}
+
+void SQ_GLSelectionPainter::drawEllipse(float xradius, float yradius)
+{
+    w->makeCurrent();
+
+    double degInRad;
+
+    glBegin(GL_LINE_LOOP);
+    glColor4f(1,0,1,1);
+
+    for(int i = 0; i < 360; i++)
+    {
+        degInRad = rad_const * i;
+        glVertex2f(cos(degInRad) * xradius, sin(degInRad) * yradius);
+    }
+
+    glColor4f(1,1,1,1);
+    glEnd();
+}
+
+void SQ_GLSelectionPainter::drawRect()
+{
+    w->makeCurrent();
+
+    glBegin(GL_LINE_LOOP);
+    glColor4f(1,0,1,1);
+
+    glVertex2f(-sw/2, sh/2);
+    glVertex2f(sw/2,  sh/2);
+    glVertex2f(sw/2,  -sh/2);
+    glVertex2f(-sw/2, -sh/2);
+
+    glColor4f(1,1,1,1);
+    glEnd();
+}
+
+void SQ_GLSelectionPainter::draw()
+{
+    if(!sw || !sh)
+        return;
+
+    if(m_type == Ellipse)
+        drawEllipse(sw/2, sh/2);
+    else
+        drawRect();
+
+    // center rectangle
+    if(sw > lenc && sh > lenc)
+    {
+        glColor4f(1,0,1,1);
+        glRectf(-lenc2, lenc2, lenc2, -lenc2);
+        glColor4f(1,1,1,1);
+    }
+}