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// SizePreview.cpp
//
// Part of KVIEWSHELL - A framework for multipage text/gfx viewers
//
// (C) 2002 Stefan Kebekus
// Distributed under the GPL
// Add header files alphabetically
#include <config.h>
#include <kdebug.h>
#include <krandomsequence.h>
#include <qevent.h>
#include <qpainter.h>
#include "sizePreview.h"
#include "simplePageSize.h"
SizePreview::SizePreview( QWidget *parent, const char *name, WFlags)
: QWidget( parent, name, WStaticContents | WNoAutoErase )
{
// Set a sane default
_width = _height = 50.0;
orientation = 0; // Portrait
}
void SizePreview::setSize(const SimplePageSize& size)
{
_width = size.width().getLength_in_mm();
_height = size.height().getLength_in_mm();
if (_width < 50.0)
_width = 50.0;
if (_width > 1200.0)
_width = 1200.0;
if (_height < 50.0)
_height = 50.0;
if (_height > 1200.0)
_height = 1200.0;
update();
}
void SizePreview::resizeEvent(QResizeEvent*)
{
update();
}
void SizePreview::paintEvent( QPaintEvent * )
{
int displayedWidth, displayedHeight;
// Figure the width and height of the displayed page. Tricky.
if (orientation == 0) {
displayedWidth = (int)(height() * (_width/_height) + 0.5);
displayedHeight = (int)(width() * (_height/_width) + 0.5);
} else {
displayedHeight = (int)(height() * (_width/_height) + 0.5);
displayedWidth = (int)(width() * (_height/_width) + 0.5);
}
if (displayedWidth <= width())
displayedHeight = height();
else
displayedWidth = width();
int hOffset = (width()-displayedWidth)/2;
int vOffset = (height()-displayedHeight)/2;
// Now draw the graphics
pixmap.resize(width(), height());
QPainter p(&pixmap);
p.fillRect(rect(), colorGroup().background());
p.setPen(Qt::black);
p.setBrush(Qt::white);
p.drawRect(hOffset, vOffset, displayedWidth, displayedHeight);
// mark the textbox; we assume 25mm margin
int margin = (int)(25.0*displayedWidth/_width + 0.5);
QRect textBox(hOffset+margin, vOffset+margin, displayedWidth-2*margin, displayedHeight-2*margin);
p.setPen(Qt::lightGray);
p.drawRect(textBox);
// Draw some dummy "text", represented by black lines
int lineSpacing = (int)(7.0*displayedWidth/_width + 0.5); // equiv. 7 mm
if (lineSpacing <= 3)
lineSpacing = 3;
int interWordSpace = (int)(4.0*displayedWidth/_width + 0.5); // equiv. 4 mm
if (interWordSpace <= 1)
interWordSpace = 2;
KRandomSequence rnd(1); // to generate word widths
p.setClipRect(textBox);
p.setPen(Qt::black);
int count = 1; // Counts lines
for (int y = vOffset+margin+lineSpacing; y <= vOffset+displayedHeight-margin; y += lineSpacing) {
// We start each line with its own seed.
// This means that the random sequence for each line is always the same, and this
// results in a more steady picture when the widget is resized.
rnd.setSeed(count);
// Every 10th line the end of a paragraph
int endParagraph;
if (count++ % 10 == 0)
endParagraph = (int)(50.0*displayedWidth/_width + 0.5);
else
endParagraph = 0;
for(int x = hOffset+margin; x <= hOffset+displayedWidth-margin-endParagraph; ) {
double wordWidthMM = rnd.getDouble()*30.0+10.0;
int wordWidth = (int)(wordWidthMM*displayedWidth/_width + 0.5);
p.drawLine(x, y, x+wordWidth, y);
x += wordWidth+interWordSpace+1;
}
}
p.end();
// Copy the pixmap onto the widget
bitBlt(this, rect().topLeft(), &pixmap, rect(), CopyROP);
return;
}
void SizePreview::setOrientation(int ori)
{
orientation = ori;
update();
}
#include "sizePreview.moc"
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