1 files changed, 367 insertions, 0 deletions
diff --git a/krita/ui/kis_ruler.cc b/krita/ui/kis_ruler.cc
new file mode 100644
index 00000000..1da94b15
--- /dev/null
+++ b/krita/ui/kis_ruler.cc
@@ -0,0 +1,367 @@
+/*
+ * Kivio - Visual Modelling and Flowcharting
+ * Copyright (C) 2000-2001 theKompany.com & Dave Marotti
+ * Copyright (C) 2002 Patrick Julien <freak@codepimps.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.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+#include <qpainter.h>
+#include <qstyle.h>
+
+#include "kdebug.h"
+
+#include "kis_ruler.h"
+
+#define MARKER_WIDTH 1
+#define MARKER_HEIGHT RULER_THICKNESS
+
+const char *KisRuler::m_nums[] = {
+    "70 7 2 1",
+    "  c Black",
+    "X c None",
+    "XX   XXXXXX XXXX   XXXX   XXXXXX XXX     XXXX  XXX     XXX   XXXX   XX",
+    "X XXX XXXX  XXX XXX XX XXX XXXX  XXX XXXXXXX XXXXXXXXX XX XXX XX XXX X",
+    "X XXX XXXXX XXXXXXX XXXXXX XXX X XXX XXXXXX XXXXXXXXX XXX XXX XX XXX X",
+    "X XXX XXXXX XXXXX  XXXXX  XXX XX XXX    XXX    XXXXXX XXXX   XXXX    X",
+    "X XXX XXXXX XXXX XXXXXXXXX XX     XXXXXX XX XXX XXXX XXXX XXX XXXXXX X",
+    "X XXX XXXXX XXX XXXXXX XXX XXXXX XXXXXXX XX XXX XXXX XXXX XXX XXXXX XX",
+    "XX   XXXXXX XXX     XXX   XXXXXX XXX    XXXX   XXXXX XXXXX   XXXX  XXX"
+};
+
+KisRuler::KisRuler(Qt::Orientation o, QWidget *parent, const char *name) : super(parent, name, WRepaintNoErase | WResizeNoErase), m_pixmapNums(m_nums)
+{
+    setBackgroundMode(NoBackground);
+    setFrameStyle(Box | Sunken);
+    setLineWidth(1);
+    setMidLineWidth(0);
+    m_orientation = o;
+    m_unit = KoUnit::U_PT;
+    m_zoom = 1.0;
+    m_firstVisible = 0;
+    m_pixmapBuffer = 0;
+    m_currentPosition = -1;
+
+    if (m_orientation == Qt::Horizontal) {
+        setFixedHeight(RULER_THICKNESS);
+        initMarker(MARKER_WIDTH, MARKER_HEIGHT);
+    } else {
+        setFixedWidth(RULER_THICKNESS);
+        initMarker(MARKER_HEIGHT, MARKER_WIDTH);
+    }
+}
+
+KisRuler::~KisRuler()
+{
+    delete m_pixmapBuffer;
+}
+
+void KisRuler::initMarker(Q_INT32 w, Q_INT32 h)
+{
+    QPainter p;
+
+    m_pixmapMarker.resize(w, h);
+    p.begin(&m_pixmapMarker);
+    p.setPen(blue);
+    p.eraseRect(0, 0, w, h);
+    p.drawLine(0, 0, w - 1, h - 1);
+    p.end();
+}
+
+void KisRuler::recalculateSize()
+{
+    Q_INT32 w;
+    Q_INT32 h;
+
+    if (m_pixmapBuffer) {
+        delete m_pixmapBuffer;
+        m_pixmapBuffer = 0;
+    }
+
+    if (m_orientation == Qt::Horizontal) {
+        w = width();
+        h = RULER_THICKNESS;
+    } else {
+        w = RULER_THICKNESS;
+        h = height();
+    }
+
+    m_pixmapBuffer = new QPixmap(w, h);
+    Q_CHECK_PTR(m_pixmapBuffer);
+
+    drawRuler();
+    updatePointer(m_currentPosition, m_currentPosition);
+}
+
+KoUnit::Unit KisRuler::unit() const
+{
+    return  m_unit;
+}
+
+void KisRuler::setUnit(KoUnit::Unit u)
+{
+    m_unit = u;
+    drawRuler();
+    updatePointer(m_currentPosition, m_currentPosition);
+    update();
+}
+
+void KisRuler::setZoom(double zoom)
+{
+    m_zoom = zoom;
+    recalculateSize();
+    drawRuler();
+    updatePointer(m_currentPosition, m_currentPosition);
+    update();
+}
+
+void KisRuler::updatePointer(Q_INT32 x, Q_INT32 y)
+{
+    if (m_pixmapBuffer) {
+        if (m_orientation == Qt::Horizontal) {
+            if (m_currentPosition != -1)
+                repaint(m_currentPosition, 1, MARKER_WIDTH, MARKER_HEIGHT);
+
+            if (x != -1) {
+                bitBlt(this, x, 1, &m_pixmapMarker, 0, 0, MARKER_WIDTH, MARKER_HEIGHT);
+                m_currentPosition = x;
+            }
+        } else {
+            if (m_currentPosition != -1)
+                repaint(1, m_currentPosition, MARKER_HEIGHT, MARKER_WIDTH);
+
+            if (y != -1) {
+                bitBlt(this, 1, y, &m_pixmapMarker, 0, 0, MARKER_HEIGHT, MARKER_WIDTH);
+                m_currentPosition = y;
+            }
+        }
+    }
+}
+
+void KisRuler::updateVisibleArea(Q_INT32 xpos, Q_INT32 ypos)
+{
+    if (m_orientation == Qt::Horizontal)
+        m_firstVisible = xpos;
+    else
+        m_firstVisible = ypos;
+
+    drawRuler();
+    update();
+    updatePointer(m_currentPosition, m_currentPosition);
+}
+
+void KisRuler::paintEvent(QPaintEvent *e)
+{
+    if (m_pixmapBuffer) {
+        const QRect& rect = e->rect();
+
+        bitBlt(this, rect.topLeft(), m_pixmapBuffer, rect);
+        super::paintEvent(e);
+    }
+}
+
+void KisRuler::drawRuler()
+{
+    QPainter p;
+    QString buf;
+    Q_INT32 st1 = 0;
+    Q_INT32 st2 = 0;
+    Q_INT32 st3 = 0;
+    Q_INT32 st4 = 0;
+
+    if (!m_pixmapBuffer)
+        return;
+
+    p.begin(m_pixmapBuffer);
+    p.setPen(colorGroup().text());
+    p.setBackgroundColor(colorGroup().base());
+    p.eraseRect(0, 0, m_pixmapBuffer->width(), m_pixmapBuffer->height());
+
+    switch (m_unit) {
+        case KoUnit::U_PT:
+        case KoUnit::U_MM:
+        case KoUnit::U_DD:
+        case KoUnit::U_CC:
+            st1 = 1;
+            st2 = 5;
+            st3 = 10;
+            st4 = 25;
+            break;
+        case KoUnit::U_CM:
+        case KoUnit::U_PI:
+        case KoUnit::U_INCH:
+        default:
+            st1 = 1;
+            st2 = 2;
+            st3 = 5;
+            st4 = 10;
+    }
+
+    bool s1 = KoUnit::fromUserValue(st1, m_unit) * m_zoom > 3.0;
+    bool s2 = KoUnit::fromUserValue(st2, m_unit) * m_zoom > 3.0;
+    bool s3 = KoUnit::fromUserValue(st3, m_unit) * m_zoom > 3.0;
+    bool s4 = KoUnit::fromUserValue(st4, m_unit) * m_zoom > 3.0;
+
+    float cx = KoUnit::fromUserValue(100, m_unit) / m_zoom;
+    Q_INT32 step = qRound(cx);
+
+    if (step < 5) {
+        step = 1;
+    } else if (step < 10) {
+        step = 5;
+    } else if (step < 25) {
+        step = 10;
+    } else if (step < 50) {
+        step = 25;
+    } else if (step < 100) {
+        step = 50;
+    } else if (step < 250) {
+        step = 100;
+    } else if (step < 500) {
+        step = 250;
+    } else if (step < 1000) {
+        step = 500;
+    } else if (step < 2500) {
+        step = 1000;
+    } else if (step < 5000) {
+        step = 2500;
+    } else if (step < 10000) {
+        step = 5000;
+    } else  if (step < 25000) {
+        step = 10000;
+    } else if (step < 50000) {
+        step = 25000;
+    } else if (step < 100000) {
+        step = 50000;
+    } else {
+        step = 100000;
+    }
+
+    Q_INT32 start = (Q_INT32)(KoUnit::fromUserValue(m_firstVisible, m_unit) / m_zoom);
+    Q_INT32 pos = 0;
+
+    if (m_orientation == Qt::Horizontal) {
+        do {
+            pos = (Q_INT32)(KoUnit::fromUserValue(start, m_unit) * m_zoom - m_firstVisible);
+
+            if (!s3 && s4 && start % st4 == 0)
+                p.drawLine(pos, RULER_THICKNESS - 9, pos, RULER_THICKNESS);
+
+            if (s3 && start % st3 == 0)
+                p.drawLine(pos, RULER_THICKNESS - 9, pos, RULER_THICKNESS);
+
+            if (s2 && start % st2 == 0)
+                p.drawLine(pos, RULER_THICKNESS - 7, pos, RULER_THICKNESS);
+
+            if (s1 && start % st1 == 0)
+                p.drawLine(pos, RULER_THICKNESS - 5, pos, RULER_THICKNESS);
+
+            if (start % step == 0) {
+                buf.setNum(QABS(start));
+                drawNums(&p, pos, 4, buf, true);
+            }
+
+            start++;
+        } while (pos < m_pixmapBuffer->width());
+    } else {
+        do {
+            pos = (Q_INT32)(KoUnit::fromUserValue(start, m_unit) * m_zoom - m_firstVisible);
+
+            if (!s3 && s4 && start % st4 == 0)
+                p.drawLine(RULER_THICKNESS - 9, pos, RULER_THICKNESS, pos);
+
+            if (s3 && start % st3 == 0)
+                p.drawLine(RULER_THICKNESS - 9, pos, RULER_THICKNESS, pos);
+
+            if (s2 && start % st2 == 0)
+                p.drawLine(RULER_THICKNESS - 7, pos, RULER_THICKNESS, pos);
+
+            if (s1 && start % st1 == 0)
+                p.drawLine(RULER_THICKNESS - 5, pos, RULER_THICKNESS, pos);
+
+            if (start % step == 0) {
+                buf.setNum(QABS(start));
+                drawNums(&p, 4, pos, buf, false);
+            }
+
+            start++;
+        } while (pos < m_pixmapBuffer->height());
+    }
+
+    p.end();
+}
+
+void KisRuler::resizeEvent(QResizeEvent *)
+{
+    recalculateSize();
+}
+
+void KisRuler::styleChange(QStyle& oldStyle)
+{
+    Q_UNUSED(oldStyle);
+    updateGeometry();
+    drawRuler();
+}
+
+void KisRuler::paletteChange(const QPalette& oldPalette)
+{
+    Q_UNUSED(oldPalette);
+    drawRuler();
+}
+
+void KisRuler::show()
+{
+    if (m_orientation == Qt::Horizontal) {
+        setFixedHeight(RULER_THICKNESS);
+        initMarker(MARKER_WIDTH, MARKER_HEIGHT);
+    } else {
+        setFixedWidth(RULER_THICKNESS);
+        initMarker(MARKER_HEIGHT, MARKER_WIDTH);
+    }
+
+    super::show();
+}
+
+void KisRuler::hide()
+{
+    /*
+    if (m_orientation == Qt::Horizontal)
+        setFixedHeight(1);
+    else
+        setFixedWidth(1);
+        */
+    super::hide();
+}
+
+void KisRuler::drawNums(QPainter *p, Q_INT32 x, Q_INT32 y, QString& num, bool orientationHoriz)
+{
+    if (orientationHoriz)
+        x -= 7;
+    else
+        y -= 8;
+
+    for (Q_UINT32 k = 0; k < num.length(); k++) {
+        Q_INT32 st = num.at(k).digitValue() * 7;
+
+        p->drawPixmap(x, y, m_pixmapNums, st, 0, 7, 7);
+
+        if (orientationHoriz)
+            x += 7;
+        else
+            y += 8;
+    }
+}
+
+#include "kis_ruler.moc"
+