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koffice/karbon/widgets/vruler.cc

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/*
* 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 "kdebug.h"
#include "vruler.h"
#define MARKER_WIDTH 1
#define MARKER_HEIGHT 20
#define RULER_SIZE 20
const char *VRuler::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"
};
VRuler::VRuler(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_SIZE);
initMarker(MARKER_WIDTH, MARKER_HEIGHT);
} else {
setFixedWidth(RULER_SIZE);
initMarker(MARKER_HEIGHT, MARKER_WIDTH);
}
}
VRuler::~VRuler()
{
delete m_pixmapBuffer;
}
void VRuler::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 VRuler::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_SIZE;
} else {
w = RULER_SIZE;
h = height();
}
m_pixmapBuffer = new QPixmap(w, h);
Q_CHECK_PTR(m_pixmapBuffer);
drawRuler();
updatePointer(m_currentPosition, m_currentPosition);
}
KoUnit::Unit VRuler::unit() const
{
return m_unit;
}
void VRuler::setUnit(KoUnit::Unit u)
{
m_unit = u;
drawRuler();
updatePointer(m_currentPosition, m_currentPosition);
repaint();
}
void VRuler::setZoom(double zoom)
{
m_zoom = zoom;
recalculateSize();
drawRuler();
updatePointer(m_currentPosition, m_currentPosition);
repaint();
}
void VRuler::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 VRuler::updateVisibleArea(Q_INT32 xpos, Q_INT32 ypos)
{
if (m_orientation == Qt::Horizontal)
m_firstVisible = xpos;
else
m_firstVisible = ypos;
//kdDebug() << "--###-- VRuler::updateVisibleArea(" << xpos << ", " << ypos << ")" << endl;
drawRuler();
repaint();
updatePointer(m_currentPosition, m_currentPosition);
//kdDebug() << "--###-- VRuler::updatePointer(" << m_currentPosition << ", " << m_currentPosition << ")" << endl;
}
void VRuler::paintEvent(QPaintEvent *e)
{
if (m_pixmapBuffer) {
const QRect& rect = e -> rect();
bitBlt(this, rect.topLeft(), m_pixmapBuffer, rect);
super::paintEvent(e);
}
}
void VRuler::drawRuler()
{
QPainter p;
QString buf;
Q_INT32 st1 = 0;
Q_INT32 st2 = 0;
Q_INT32 st3 = 0;
Q_INT32 st4 = 0;
Q_INT32 stt = 0;
if (!m_pixmapBuffer)
return;
p.begin(m_pixmapBuffer);
p.setPen(QColor(0x70, 0x70, 0x70));
p.setBackgroundColor(colorGroup().background());
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;
stt = 100;
break;
case KoUnit::U_CM:
case KoUnit::U_PI:
case KoUnit::U_INCH:
st1 = 1;
st2 = 2;
st3 = 5;
st4 = 10;
stt = 1;
break;
default:
break;
}
Q_INT32 pos = 0;
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;
if (m_orientation == Qt::Horizontal) {
// XXX: This was 7 * 4 -- why? what was the idea about having 30 point intervals?
float cx = KoUnit::fromUserValue(100, m_unit) / m_zoom;
Q_INT32 step = qRound(cx);//((Q_INT32)(cx / (float)stt) + 1) * stt;
Q_INT32 start = (Q_INT32)(KoUnit::toUserValue(m_firstVisible, m_unit) / m_zoom);
do {
pos = (Q_INT32)(KoUnit::fromUserValue(start, m_unit) * m_zoom - m_firstVisible);
if (!s3 && s4 && start % st4 == 0)
p.drawLine(pos, RULER_SIZE - 9, pos, RULER_SIZE);
if (s3 && start % st3 == 0)
p.drawLine(pos, RULER_SIZE - 9, pos, RULER_SIZE);
if (s2 && start % st2 == 0)
p.drawLine(pos, RULER_SIZE - 7, pos, RULER_SIZE);
if (s1 && start % st1 == 0)
p.drawLine(pos, RULER_SIZE - 5, pos, RULER_SIZE);
if (step && start % step == 0) {
buf.setNum(QABS(start));
drawNums(&p, pos, 4, buf, true);
}
start++;
} while (pos < m_pixmapBuffer -> width());
} else {
m_firstVisible = 0;
float cx = KoUnit::fromUserValue(100, m_unit) / m_zoom;
Q_INT32 height = m_pixmapBuffer -> height() - 1;
Q_INT32 step = qRound(cx);
Q_INT32 start = (Q_INT32)(KoUnit::toUserValue(m_firstVisible, m_unit) / m_zoom);
do {
pos = height - (Q_INT32)(KoUnit::fromUserValue(start, m_unit) * m_zoom - m_firstVisible);
if (!s3 && s4 && start % st4 == 0)
p.drawLine(RULER_SIZE - 9, pos, RULER_SIZE, pos);
if (s3 && start % st3 == 0)
p.drawLine(RULER_SIZE - 9, pos, RULER_SIZE, pos);
if (s2 && start % st2 == 0)
p.drawLine(RULER_SIZE - 7, pos, RULER_SIZE, pos);
if (s1 && start % st1 == 0)
p.drawLine(RULER_SIZE - 5, pos, RULER_SIZE, pos);
if (step && start % step == 0) {
buf.setNum(QABS(start));
drawNums(&p, 4, pos, buf, false);
}
start++;
} while (pos > 0);
}
p.end();
}
void VRuler::resizeEvent(QResizeEvent *)
{
recalculateSize();
}
void VRuler::show()
{
if (m_orientation == Qt::Horizontal) {
setFixedHeight(RULER_SIZE);
initMarker(MARKER_WIDTH, MARKER_HEIGHT);
} else {
setFixedWidth(RULER_SIZE);
initMarker(MARKER_HEIGHT, MARKER_WIDTH);
}
super::show();
}
void VRuler::hide()
{
if (m_orientation == Qt::Horizontal)
setFixedHeight(1);
else
setFixedWidth(1);
}
void VRuler::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 "vruler.moc"
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