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tdelibs/kdeui/kruler.cpp

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/* This file is part of the KDE libraries
Copyright (C) 1998 Jörg Habenicht (j.habenicht@europemail.com)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "kruler.h"
#include <qpainter.h>
#include <qfont.h>
#define INIT_VALUE 0
#define INIT_MIN_VALUE 0
#define INIT_MAX_VALUE 100
#define INIT_TINY_MARK_DISTANCE 1
#define INIT_LITTLE_MARK_DISTANCE 5
#define INIT_MIDDLE_MARK_DISTANCE (INIT_LITTLE_MARK_DISTANCE * 2)
#define INIT_BIG_MARK_DISTANCE (INIT_LITTLE_MARK_DISTANCE * 10)
#define INIT_SHOW_TINY_MARK false
#define INIT_SHOW_LITTLE_MARK true
#define INIT_SHOW_MEDIUM_MARK true
#define INIT_SHOW_BIG_MARK true
#define INIT_SHOW_END_MARK true
#define INIT_SHOW_POINTER true
#define INIT_SHOW_END_LABEL true
#define INIT_PIXEL_PER_MARK (double)10.0 /* distance between 2 base marks in pixel */
#define INIT_OFFSET (-20)
#define INIT_LENGTH_FIX true
#define INIT_END_OFFSET 0
#define FIX_WIDTH 20 /* widget width in pixel */
#define LINE_END (FIX_WIDTH - 3)
#define END_MARK_LENGTH (FIX_WIDTH - 6)
#define END_MARK_X2 LINE_END
#define END_MARK_X1 (END_MARK_X2 - END_MARK_LENGTH)
#define BIG_MARK_LENGTH (END_MARK_LENGTH*3/4)
#define BIG_MARK_X2 LINE_END
#define BIG_MARK_X1 (BIG_MARK_X2 - BIG_MARK_LENGTH)
#define MIDDLE_MARK_LENGTH (END_MARK_LENGTH/2)
#define MIDDLE_MARK_X2 LINE_END
#define MIDDLE_MARK_X1 (MIDDLE_MARK_X2 - MIDDLE_MARK_LENGTH)
#define LITTLE_MARK_LENGTH (MIDDLE_MARK_LENGTH/2)
#define LITTLE_MARK_X2 LINE_END
#define LITTLE_MARK_X1 (LITTLE_MARK_X2 - LITTLE_MARK_LENGTH)
#define BASE_MARK_LENGTH (LITTLE_MARK_LENGTH/2)
#define BASE_MARK_X2 LINE_END
#define BASE_MARK_X1 (BASE_MARK_X2 - BASE_MARK_LENGTH)
#define LABEL_SIZE 8
#define END_LABEL_X 4
#define END_LABEL_Y (END_LABEL_X + LABEL_SIZE - 2)
#undef PROFILING
#ifdef PROFILING
# include <qdatetime.h>
#endif
class KRuler::KRulerPrivate
{
public:
bool showpointer;
bool showEndL;
bool lengthFix;
int endOffset_length; /* marks the offset at the end of the ruler
* i.e. right side at horizontal and down side
* at vertical rulers.
* the ruler end mark is moved endOffset_length
* ticks away from the widget end.
* positive offset moves end mark inside the ruler.
* if lengthFix is true, endOffset_length holds the
* length of the ruler.
*/
int fontWidth; // ONLY valid for vertical rulers
};
KRuler::KRuler(QWidget *parent, const char *name)
: QFrame(parent, name),
range(INIT_MIN_VALUE, INIT_MAX_VALUE, 1, 10, INIT_VALUE),
dir(Horizontal)
{
init();
setFixedHeight(FIX_WIDTH);
}
KRuler::KRuler(Orientation orient,
QWidget *parent, const char *name, WFlags f)
: QFrame(parent, name, f),
range(INIT_MIN_VALUE, INIT_MAX_VALUE, 1, 10, INIT_VALUE),
dir(orient)
{
init();
if (orient == Horizontal)
setFixedHeight(FIX_WIDTH);
else
setFixedWidth(FIX_WIDTH);
}
KRuler::KRuler(Orientation orient, int widgetWidth,
QWidget *parent, const char *name, WFlags f)
: QFrame(parent, name, f),
range(INIT_MIN_VALUE, INIT_MAX_VALUE, 1, 10, INIT_VALUE),
dir(orient)
{
init();
if (orient == Horizontal)
setFixedHeight(widgetWidth);
else
setFixedWidth(widgetWidth);
}
void KRuler::init()
{
setFrameStyle(WinPanel | Raised);
tmDist = INIT_TINY_MARK_DISTANCE;
lmDist = INIT_LITTLE_MARK_DISTANCE;
mmDist = INIT_MIDDLE_MARK_DISTANCE;
bmDist = INIT_BIG_MARK_DISTANCE;
offset_= INIT_OFFSET;
showtm = INIT_SHOW_TINY_MARK;
showlm = INIT_SHOW_LITTLE_MARK;
showmm = INIT_SHOW_MEDIUM_MARK;
showbm = INIT_SHOW_BIG_MARK;
showem = INIT_SHOW_END_MARK;
ppm = INIT_PIXEL_PER_MARK;
d = new KRuler::KRulerPrivate;
d->showpointer = INIT_SHOW_POINTER;
d->showEndL = INIT_SHOW_END_LABEL;
d->lengthFix = INIT_LENGTH_FIX;
d->endOffset_length = INIT_END_OFFSET;
}
KRuler::~KRuler()
{
delete d;
}
void
KRuler::setMinValue(int value)
{
if (range.minValue() != value) {
range.setRange( value, range.maxValue() );
update(contentsRect());
}
}
void
KRuler::setMaxValue(int value)
{
if (range.maxValue() != value) {
range.setRange( range.minValue(), value );
update(contentsRect());
}
}
void
KRuler::setRange(int min, int max)
{// debug("set range from %i to %i", min, max);
if ((range.minValue() != min) || (range.maxValue() != max)) {
range.setRange( min, max );
update(contentsRect());
}
}
void
KRuler::setValue(int value)
{
range.setValue(value);
update(contentsRect());
}
void
KRuler::setTinyMarkDistance(int dist)
{
if (dist != tmDist) {
tmDist = dist;
update(contentsRect());
}
}
void
KRuler::setLittleMarkDistance(int dist)
{
if (dist != lmDist) {
lmDist = dist;
update(contentsRect());
}
}
void
KRuler::setMediumMarkDistance(int dist)
{
if (dist != mmDist) {
mmDist = dist;
update(contentsRect());
}
}
void
KRuler::setBigMarkDistance(int dist)
{
if (dist != bmDist) {
bmDist = dist;
update(contentsRect());
}
}
void
KRuler::setShowTinyMarks(bool show)
{
if (show != showtm) {
showtm = show;
update(contentsRect());
}
}
bool
KRuler::showTinyMarks() const
{
return showtm;
}
void
KRuler::setShowLittleMarks(bool show)
{
if (show != showlm) {
showlm = show;
update(contentsRect());
}
}
bool
KRuler::showLittleMarks() const
{
return showlm;
}
void
KRuler::setShowMediumMarks(bool show)
{
if (show != showmm) {
showmm = show;
update(contentsRect());
}
}
bool
KRuler::showMediumMarks() const
{
return showmm;
}
void
KRuler::setShowBigMarks(bool show)
{
if (show != showbm) {
showbm = show;
update(contentsRect());
}
}
bool
KRuler::showBigMarks() const
{
return showbm;
}
void
KRuler::setShowEndMarks(bool show)
{
if (show != showem) {
showem = show;
update(contentsRect());
}
}
bool
KRuler::showEndMarks() const
{
return showem;
}
void
KRuler::setShowPointer(bool show)
{
if (show != d->showpointer) {
d->showpointer = show;
update(contentsRect());
}
}
bool
KRuler::showPointer() const
{
return d->showpointer;
}
void
KRuler::setValuePerLittleMark(int)
{
update(contentsRect());
}
void
KRuler::setValuePerMediumMark(int)
{
update(contentsRect());
}
void
KRuler::setValuePerBigMark(int)
{
update(contentsRect());
}
void
KRuler::setShowEndLabel(bool show)
{
if (d->showEndL != show) {
d->showEndL = show;
update(contentsRect());
}
}
bool
KRuler::showEndLabel() const
{
return d->showEndL;
}
void
KRuler::setEndLabel(const QString& label)
{
endlabel = label;
// premeasure the fontwidth and save it
if (dir == Vertical) {
QFont font = this->font();
font.setPointSize(LABEL_SIZE);
QFontMetrics fm(font);
d->fontWidth = fm.width(endlabel);
}
update(contentsRect());
}
QString KRuler::endLabel() const
{
return endlabel;
}
void
KRuler::setRulerMetricStyle(KRuler::MetricStyle style)
{
switch (style) {
default: /* fall through */
case Custom:
return;
case Pixel:
setLittleMarkDistance(1);
setMediumMarkDistance(5);
setBigMarkDistance(10);
setShowTinyMarks(false);
setShowLittleMarks(true);
setShowMediumMarks(true);
setShowBigMarks(true);
setShowEndMarks(true);
update(contentsRect());
setPixelPerMark(10.0);
break;
case Inch:
setTinyMarkDistance(1);
setLittleMarkDistance(2);
setMediumMarkDistance(4);
setBigMarkDistance(8);
setShowTinyMarks(true);
setShowLittleMarks(true);
setShowMediumMarks(true);
setShowBigMarks(true);
setShowEndMarks(true);
update(contentsRect());
setPixelPerMark(9.0);
break;
case Millimetres: /* fall through */
case Centimetres: /* fall through */
case Metres:
setLittleMarkDistance(1);
setMediumMarkDistance(5);
setBigMarkDistance(10);
setShowTinyMarks(false);
setShowLittleMarks(true);
setShowMediumMarks(true);
setShowBigMarks(true);
setShowEndMarks(true);
update(contentsRect());
setPixelPerMark(3.0);
}
switch (style) {
case Pixel:
setEndLabel(QString::fromLatin1("pixel"));
break;
case Inch:
setEndLabel(QString::fromLatin1("inch"));
break;
case Millimetres:
setEndLabel(QString::fromLatin1("mm"));
break;
case Centimetres:
setEndLabel(QString::fromLatin1("cm"));
break;
case Metres:
setEndLabel(QString::fromLatin1("m"));
default: /* never reached, see above switch */
/* empty command */;
}
// if the style changes one of the values,
// update would have been called inside the methods
// -> no update() call needed here !
}
void
KRuler::setPixelPerMark(double rate)
{ // never compare floats against each other :)
ppm = rate;
update(contentsRect());
}
void
KRuler::setLength(int length)
{
int tmp;
if (d->lengthFix) {
tmp = length;
}
else {
tmp = this->width() - length;
}
if (tmp != d->endOffset_length) {
d->endOffset_length = tmp;
update(contentsRect());
}
}
int
KRuler::length() const
{
if (d->lengthFix) {
return d->endOffset_length;
}
return (this->width() - d->endOffset_length);
}
void
KRuler::setLengthFixed(bool fix)
{
d->lengthFix = fix;
}
bool
KRuler::lengthFixed() const
{
return d->lengthFix;
}
void
KRuler::setOffset(int _offset)
{// debug("set offset %i", _offset);
if (offset_ != _offset) {
offset_ = _offset;
update(contentsRect());
}
}
int
KRuler::endOffset() const
{
if (d->lengthFix) {
return (this->width() - d->endOffset_length);
}
return d->endOffset_length;
}
void
KRuler::slideUp(int count)
{
if (count) {
offset_ += count;
update(contentsRect());
}
}
void
KRuler::slideDown(int count)
{
if (count) {
offset_ -= count;
update(contentsRect());
}
}
void
KRuler::slotNewValue(int _value)
{
int oldvalue = range.value();
if (oldvalue == _value) {
return;
}
// setValue(_value);
range.setValue(_value);
if (range.value() == oldvalue) {
return;
}
// get the rectangular of the old and the new ruler pointer
// and repaint only him
if (dir == Horizontal) {
QRect oldrec(-5+oldvalue,10, 11,6);
QRect newrec(-5+_value,10, 11,6);
repaint( oldrec.unite(newrec) );
}
else {
QRect oldrec(10,-5+oldvalue, 6,11);
QRect newrec(10,-5+_value, 6,11);
repaint( oldrec.unite(newrec) );
}
}
void
KRuler::slotNewOffset(int _offset)
{
if (offset_ != _offset) {
//setOffset(_offset);
offset_ = _offset;
repaint(contentsRect());
}
}
void
KRuler::slotEndOffset(int offset)
{
int tmp;
if (d->lengthFix) {
tmp = this->width() - offset;
}
else {
tmp = offset;
}
if (d->endOffset_length != tmp) {
d->endOffset_length = tmp;
repaint(contentsRect());
}
}
void
KRuler::drawContents(QPainter *p)
{
// debug ("KRuler::drawContents, %s",(horizontal==dir)?"horizontal":"vertical");
#ifdef PROFILING
QTime time;
time.start();
for (int profile=0; profile<10; profile++) {
#endif
int value = range.value(),
minval = range.minValue(),
maxval;
if (dir == Horizontal) {
maxval = range.maxValue()
+ offset_
- (d->lengthFix?(height()-d->endOffset_length):d->endOffset_length);
}
else
{
maxval = range.maxValue()
+ offset_
- (d->lengthFix?(width()-d->endOffset_length):d->endOffset_length);
}
//ioffsetval = value-offset;
// pixelpm = (int)ppm;
// left = clip.left(),
// right = clip.right();
double f, fend,
offsetmin=(double)(minval-offset_),
offsetmax=(double)(maxval-offset_),
fontOffset = (((double)minval)>offsetmin)?(double)minval:offsetmin;
// draw labels
QFont font = p->font();
font.setPointSize(LABEL_SIZE);
p->setFont( font );
// draw littlemarklabel
// draw mediummarklabel
// draw bigmarklabel
// draw endlabel
if (d->showEndL) {
if (dir == Horizontal) {
p->translate( fontOffset, 0 );
p->drawText( END_LABEL_X, END_LABEL_Y, endlabel );
}
else { // rotate text +pi/2 and move down a bit
//QFontMetrics fm(font);
#ifdef KRULER_ROTATE_TEST
p->rotate( -90.0 + rotate );
p->translate( -8.0 - fontOffset - d->fontWidth + xtrans,
ytrans );
#else
p->rotate( -90.0 );
p->translate( -8.0 - fontOffset - d->fontWidth, 0.0 );
#endif
p->drawText( END_LABEL_X, END_LABEL_Y, endlabel );
}
p->resetXForm();
}
// draw the tiny marks
if (showtm) {
fend = ppm*tmDist;
for ( f=offsetmin; f<offsetmax; f+=fend ) {
if (dir == Horizontal) {
p->drawLine((int)f, BASE_MARK_X1, (int)f, BASE_MARK_X2);
}
else {
p->drawLine(BASE_MARK_X1, (int)f, BASE_MARK_X2, (int)f);
}
}
}
if (showlm) {
// draw the little marks
fend = ppm*lmDist;
for ( f=offsetmin; f<offsetmax; f+=fend ) {
if (dir == Horizontal) {
p->drawLine((int)f, LITTLE_MARK_X1, (int)f, LITTLE_MARK_X2);
}
else {
p->drawLine(LITTLE_MARK_X1, (int)f, LITTLE_MARK_X2, (int)f);
}
}
}
if (showmm) {
// draw medium marks
fend = ppm*mmDist;
for ( f=offsetmin; f<offsetmax; f+=fend ) {
if (dir == Horizontal) {
p->drawLine((int)f, MIDDLE_MARK_X1, (int)f, MIDDLE_MARK_X2);
}
else {
p->drawLine(MIDDLE_MARK_X1, (int)f, MIDDLE_MARK_X2, (int)f);
}
}
}
if (showbm) {
// draw big marks
fend = ppm*bmDist;
for ( f=offsetmin; f<offsetmax; f+=fend ) {
if (dir == Horizontal) {
p->drawLine((int)f, BIG_MARK_X1, (int)f, BIG_MARK_X2);
}
else {
p->drawLine(BIG_MARK_X1, (int)f, BIG_MARK_X2, (int)f);
}
}
}
if (showem) {
// draw end marks
if (dir == Horizontal) {
p->drawLine(minval-offset_, END_MARK_X1, minval-offset_, END_MARK_X2);
p->drawLine(maxval-offset_, END_MARK_X1, maxval-offset_, END_MARK_X2);
}
else {
p->drawLine(END_MARK_X1, minval-offset_, END_MARK_X2, minval-offset_);
p->drawLine(END_MARK_X1, maxval-offset_, END_MARK_X2, maxval-offset_);
}
}
// draw pointer
if (d->showpointer) {
QPointArray pa(4);
if (dir == Horizontal) {
pa.setPoints(3, value-5, 10, value+5, 10, value/*+0*/,15);
}
else {
pa.setPoints(3, 10, value-5, 10, value+5, 15, value/*+0*/);
}
p->setBrush( p->backgroundColor() );
p->drawPolygon( pa );
}
#ifdef PROFILING
}
int elapsed = time.elapsed();
debug("paint time %i",elapsed);
#endif
}
void KRuler::virtual_hook( int, void* )
{ /*BASE::virtual_hook( id, data );*/ }
#include "kruler.moc"
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