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Diffstat (limited to 'kolourpaint/kpselection.cpp')
| -rw-r--r-- | kolourpaint/kpselection.cpp | 1446 |
1 files changed, 1446 insertions, 0 deletions
diff --git a/kolourpaint/kpselection.cpp b/kolourpaint/kpselection.cpp new file mode 100644 index 00000000..eb5924cf --- /dev/null +++ b/kolourpaint/kpselection.cpp @@ -0,0 +1,1446 @@ + +/* + Copyright (c) 2003,2004,2005 Clarence Dang <dang@kde.org> + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + + +#define DEBUG_KP_SELECTION 0 + + +#include <kpselection.h> + +#include <qfont.h> +#include <qimage.h> +#include <qpainter.h> +#include <qwmatrix.h> + +#include <kdebug.h> +#include <klocale.h> + +#include <kpcolorsimilaritydialog.h> +#include <kpdefs.h> +#include <kppixmapfx.h> +#include <kptool.h> + + +kpSelection::kpSelection (const kpSelectionTransparency &transparency) + : QObject (), + m_type (kpSelection::Rectangle), + m_pixmap (0) +{ + setTransparency (transparency); +} + +kpSelection::kpSelection (Type type, const QRect &rect, const QPixmap &pixmap, + const kpSelectionTransparency &transparency) + : QObject (), + m_type (type), + m_rect (rect) +{ + calculatePoints (); + m_pixmap = pixmap.isNull () ? 0 : new QPixmap (pixmap); + + setTransparency (transparency); +} + +kpSelection::kpSelection (Type type, const QRect &rect, const kpSelectionTransparency &transparency) + : QObject (), + m_type (type), + m_rect (rect), + m_pixmap (0) +{ + calculatePoints (); + + setTransparency (transparency); +} + +kpSelection::kpSelection (const QRect &rect, + const QValueVector <QString> &textLines_, + const kpTextStyle &textStyle_) + : QObject (), + m_type (Text), + m_rect (rect), + m_pixmap (0), + m_textStyle (textStyle_) +{ + calculatePoints (); + + setTextLines (textLines_); +} + +kpSelection::kpSelection (const QPointArray &points, const QPixmap &pixmap, + const kpSelectionTransparency &transparency) + : QObject (), + m_type (Points), + m_rect (points.boundingRect ()), + m_points (points) +{ + m_pixmap = pixmap.isNull () ? 0 : new QPixmap (pixmap); + m_points.detach (); + + setTransparency (transparency); +} + +kpSelection::kpSelection (const QPointArray &points, const kpSelectionTransparency &transparency) + : QObject (), + m_type (Points), + m_rect (points.boundingRect ()), + m_points (points), + m_pixmap (0) +{ + m_points.detach (); + + setTransparency (transparency); +} + +kpSelection::kpSelection (const kpSelection &rhs) + : QObject (), + m_type (rhs.m_type), + m_rect (rhs.m_rect), + m_points (rhs.m_points), + m_pixmap (rhs.m_pixmap ? new QPixmap (*rhs.m_pixmap) : 0), + m_textLines (rhs.m_textLines), + m_textStyle (rhs.m_textStyle), + m_transparency (rhs.m_transparency), + m_transparencyMask (rhs.m_transparencyMask) +{ + m_points.detach (); +} + +kpSelection &kpSelection::operator= (const kpSelection &rhs) +{ + if (this == &rhs) + return *this; + + m_type = rhs.m_type; + m_rect = rhs.m_rect; + m_points = rhs.m_points; + m_points.detach (); + + delete m_pixmap; + m_pixmap = rhs.m_pixmap ? new QPixmap (*rhs.m_pixmap) : 0; + + m_textLines = rhs.m_textLines; + m_textStyle = rhs.m_textStyle; + + m_transparency = rhs.m_transparency; + m_transparencyMask = rhs.m_transparencyMask; + + return *this; +} + + +// friend +QDataStream &operator<< (QDataStream &stream, const kpSelection &selection) +{ +#if DEBUG_KP_SELECTION && 1 + kdDebug () << "kpSelection::operator<<(sel: rect=" << selection.boundingRect () + << " pixmap rect=" << (selection.pixmap () ? selection.pixmap ()->rect () : QRect ()) + << endl; +#endif + stream << int (selection.m_type); + stream << selection.m_rect; + stream << selection.m_points; +#if DEBUG_KP_SELECTION && 1 + kdDebug () << "\twrote type=" << int (selection.m_type) << " rect=" << selection.m_rect + << " and points" << endl; +#endif + + // TODO: need for text? + // For now we just use QTextDrag for Text Selections so this point is mute. + if (selection.m_pixmap) + { + const QImage image = kpPixmapFX::convertToImage (*selection.m_pixmap); + #if DEBUG_KP_SELECTION && 1 + kdDebug () << "\twrote image rect=" << image.rect () << endl; + #endif + stream << image; + } + else + { + #if DEBUG_KP_SELECTION && 1 + kdDebug () << "\twrote no image because no pixmap" << endl; + #endif + stream << QImage (); + } + + //stream << selection.m_textLines; + //stream << selection.m_textStyle; + + return stream; +} + +// friend +QDataStream &operator>> (QDataStream &stream, kpSelection &selection) +{ + selection.readFromStream (stream); + return stream; +} + +// public +// TODO: KolourPaint has not been tested against invalid or malicious +// clipboard data [Bug #28]. +void kpSelection::readFromStream (QDataStream &stream, + const kpPixmapFX::WarnAboutLossInfo &wali) +{ +#if DEBUG_KP_SELECTION && 1 + kdDebug () << "kpSelection::readFromStream()" << endl; +#endif + int typeAsInt; + stream >> typeAsInt; + m_type = kpSelection::Type (typeAsInt); +#if DEBUG_KP_SELECTION && 1 + kdDebug () << "\ttype=" << typeAsInt << endl; +#endif + + stream >> m_rect; + stream >> m_points; + m_points.detach (); +#if DEBUG_KP_SELECTION && 1 + kdDebug () << "\trect=" << m_rect << endl; + //kdDebug () << "\tpoints=" << m_points << endl; +#endif + + QImage image; + stream >> image; + delete m_pixmap; + if (!image.isNull ()) + m_pixmap = new QPixmap (kpPixmapFX::convertToPixmap (image, false/*no dither*/, wali)); + else + m_pixmap = 0; +#if DEBUG_KP_SELECTION && 1 + kdDebug () << "\timage: w=" << image.width () << " h=" << image.height () + << " depth=" << image.depth () << endl; + if (m_pixmap) + { + kdDebug () << "\tpixmap: w=" << m_pixmap->width () << " h=" << m_pixmap->height () + << endl; + } + else + { + kdDebug () << "\tpixmap: none" << endl; + } +#endif + + //stream >> m_textLines; + //stream >> m_textStyle; +} + +kpSelection::~kpSelection () +{ + delete m_pixmap; m_pixmap = 0; +} + + +// private +void kpSelection::calculatePoints () +{ + if (m_type == kpSelection::Points) + return; + + if (m_type == kpSelection::Ellipse) + { + m_points.makeEllipse (m_rect.x (), m_rect.y (), + m_rect.width (), m_rect.height ()); + return; + } + + if (m_type == kpSelection::Rectangle || m_type == kpSelection::Text) + { + // OPT: not space optimal - redoes corners + m_points.resize (m_rect.width () * 2 + m_rect.height () * 2); + + int pointsUpto = 0; + + // top + for (int x = 0; x < m_rect.width (); x++) + m_points [pointsUpto++] = QPoint (m_rect.x () + x, m_rect.top ()); + + // right + for (int y = 0; y < m_rect.height (); y++) + m_points [pointsUpto++] = QPoint (m_rect.right (), m_rect.y () + y); + + // bottom + for (int x = m_rect.width () - 1; x >= 0; x--) + m_points [pointsUpto++] = QPoint (m_rect.x () + x, m_rect.bottom ()); + + // left + for (int y = m_rect.height () - 1; y >= 0; y--) + m_points [pointsUpto++] = QPoint (m_rect.left (), m_rect.y () + y); + + return; + } + + kdError () << "kpSelection::calculatePoints() with unknown type" << endl; + return; +} + + +// public +kpSelection::Type kpSelection::type () const +{ + return m_type; +} + +// public +bool kpSelection::isRectangular () const +{ + return (m_type == Rectangle || m_type == Text); +} + +// public +bool kpSelection::isText () const +{ + return (m_type == Text); +} + +// public +QString kpSelection::name () const +{ + if (m_type == Text) + return i18n ("Text"); + + return i18n ("Selection"); +} + + +// public +int kpSelection::size () const +{ + return kpPixmapFX::pointArraySize (m_points) + + kpPixmapFX::pixmapSize (m_pixmap) + + kpPixmapFX::stringSize (text ()) + + kpPixmapFX::pixmapSize (m_transparencyMask); +} + + +// public +QBitmap kpSelection::maskForOwnType (bool nullForRectangular) const +{ + if (!m_rect.isValid ()) + { + kdError () << "kpSelection::maskForOwnType() boundingRect invalid" << endl; + return QBitmap (); + } + + + if (isRectangular ()) + { + if (nullForRectangular) + return QBitmap (); + + QBitmap maskBitmap (m_rect.width (), m_rect.height ()); + maskBitmap.fill (Qt::color1/*opaque*/); + return maskBitmap; + } + + + QBitmap maskBitmap (m_rect.width (), m_rect.height ()); + maskBitmap.fill (Qt::color0/*transparent*/); + + QPainter painter; + painter.begin (&maskBitmap); + painter.setPen (Qt::color1)/*opaque*/; + painter.setBrush (Qt::color1/*opaque*/); + + if (m_type == kpSelection::Ellipse) + painter.drawEllipse (0, 0, m_rect.width (), m_rect.height ()); + else if (m_type == kpSelection::Points) + { + QPointArray points = m_points; + points.detach (); + points.translate (-m_rect.x (), -m_rect.y ()); + + painter.drawPolygon (points, false/*even-odd algo*/); + } + + painter.end (); + + + return maskBitmap; +} + + +// public +QPoint kpSelection::topLeft () const +{ + return m_rect.topLeft (); +} + +// public +QPoint kpSelection::point () const +{ + return m_rect.topLeft (); +} + + +// public +int kpSelection::x () const +{ + return m_rect.x (); +} + +// public +int kpSelection::y () const +{ + return m_rect.y (); +} + + +// public +void kpSelection::moveBy (int dx, int dy) +{ +#if DEBUG_KP_SELECTION && 1 + kdDebug () << "kpSelection::moveBy(" << dx << "," << dy << ")" << endl; +#endif + + if (dx == 0 && dy == 0) + return; + + QRect oldRect = boundingRect (); + +#if DEBUG_KP_SELECTION && 1 + kdDebug () << "\toldRect=" << oldRect << endl; +#endif + + m_rect.moveBy (dx, dy); + m_points.translate (dx, dy); +#if DEBUG_KP_SELECTION && 1 + kdDebug () << "\tnewRect=" << m_rect << endl; +#endif + + emit changed (oldRect); + emit changed (boundingRect ()); +} + +// public +void kpSelection::moveTo (int dx, int dy) +{ + moveTo (QPoint (dx, dy)); +} + +// public +void kpSelection::moveTo (const QPoint &topLeftPoint) +{ +#if DEBUG_KP_SELECTION && 1 + kdDebug () << "kpSelection::moveTo(" << topLeftPoint << ")" << endl; +#endif + QRect oldBoundingRect = boundingRect (); +#if DEBUG_KP_SELECTION && 1 + kdDebug () << "\toldBoundingRect=" << oldBoundingRect << endl; +#endif + if (topLeftPoint == oldBoundingRect.topLeft ()) + return; + + QPoint delta (topLeftPoint - oldBoundingRect.topLeft ()); + moveBy (delta.x (), delta.y ()); +} + + +// public +QPointArray kpSelection::points () const +{ + return m_points; +} + +// public +QPointArray kpSelection::pointArray () const +{ + return m_points; +} + +// public +QRect kpSelection::boundingRect () const +{ + return m_rect; +} + +// public +int kpSelection::width () const +{ + return boundingRect ().width (); +} + +// public +int kpSelection::height () const +{ + return boundingRect ().height (); +} + +// public +bool kpSelection::contains (const QPoint &point) const +{ + QRect rect = boundingRect (); + +#if DEBUG_KP_SELECTION && 1 + kdDebug () << "kpSelection::contains(" << point + << ") rect==" << rect + << " #points=" << m_points.size () + << endl; +#endif + + if (!rect.contains (point)) + return false; + + // OPT: QRegion is probably incredibly slow - cache + // We can't use the m_pixmap (if avail) and get the transparency of + // the pixel at that point as it may be transparent but still within the + // border + switch (m_type) + { + case kpSelection::Rectangle: + case kpSelection::Text: + return true; + case kpSelection::Ellipse: + return QRegion (m_rect, QRegion::Ellipse).contains (point); + case kpSelection::Points: + // TODO: make this always include the border + // (draw up a rect sel in this mode to see what I mean) + return QRegion (m_points, false/*even-odd algo*/).contains (point); + default: + return false; + } +} + +// public +bool kpSelection::contains (int x, int y) +{ + return contains (QPoint (x, y)); +} + + +// public +QPixmap *kpSelection::pixmap () const +{ + return m_pixmap; +} + +// public +void kpSelection::setPixmap (const QPixmap &pixmap) +{ + delete m_pixmap; + // TODO: If isText(), setting pixmap() to 0 is unexpected (implies + // it's a border, not a text box) but saves memory when using + // that kpSelection::setPixmap (QPixmap ()) hack. + m_pixmap = pixmap.isNull () ? 0 : new QPixmap (pixmap); + QRect changedRect = boundingRect (); + + if (m_pixmap) + { + const bool changedSize = (m_pixmap->width () != m_rect.width () || + m_pixmap->height () != m_rect.height ()); + const bool changedFromText = (m_type == Text); + if (changedSize || changedFromText) + { + if (changedSize) + { + kdError () << "kpSelection::setPixmap() changes the size of the selection!" + << " old:" + << " w=" << m_rect.width () + << " h=" << m_rect.height () + << " new:" + << " w=" << m_pixmap->width () + << " h=" << m_pixmap->height () + << endl; + } + + if (changedFromText) + { + kdError () << "kpSelection::setPixmap() changed from text" << endl; + } + + m_type = kpSelection::Rectangle; + m_rect = QRect (m_rect.x (), m_rect.y (), + m_pixmap->width (), m_pixmap->height ()); + calculatePoints (); + + m_textLines = QValueVector <QString> (); + + changedRect = changedRect.unite (boundingRect ()); + } + } + + calculateTransparencyMask (); + + emit changed (changedRect); +} + + +// public +bool kpSelection::usesBackgroundPixmapToPaint () const +{ + // Opaque text with transparent background needs to antialias with + // doc pixmap below it. + return (isText () && + m_textStyle.foregroundColor ().isOpaque () && + m_textStyle.effectiveBackgroundColor ().isTransparent ()); +} + +static int mostContrastingValue (int val) +{ + if (val <= 127) + return 255; + else + return 0; +} + +static QRgb mostContrastingRGB (QRgb val) +{ + return qRgba (mostContrastingValue (qRed (val)), + mostContrastingValue (qGreen (val)), + mostContrastingValue (qBlue (val)), + mostContrastingValue (qAlpha (val))); +} + +// private +static void drawTextLines (QPainter *painter, QPainter *maskPainter, + const QRect &rect, + const QValueVector <QString> &textLines) +{ + if (!painter->clipRegion ().isEmpty () || !maskPainter->clipRegion ().isEmpty ()) + { + // TODO: fix esp. before making method public + kdError () << "kpselection.cpp:drawTextLines() can't deal with existing painter clip regions" << endl; + return; + } + + +#define PAINTER_CALL(cmd) \ +{ \ + if (painter->isActive ()) \ + painter->cmd; \ + \ + if (maskPainter->isActive ()) \ + maskPainter->cmd; \ +} + + + // Can't do this because the line heights become + // >QFontMetrics::height() if you type Chinese characters (!) and then + // the cursor gets out of sync. + // PAINTER_CALL (drawText (rect, 0/*flags*/, text ())); + + +#if 0 + const QFontMetrics fontMetrics (painter->fontMetrics ()); + + kdDebug () << "height=" << fontMetrics.height () + << " leading=" << fontMetrics.leading () + << " ascent=" << fontMetrics.ascent () + << " descent=" << fontMetrics.descent () + << " lineSpacing=" << fontMetrics.lineSpacing () + << endl; +#endif + + + PAINTER_CALL (setClipRect (rect, QPainter::CoordPainter/*transform*/)); + + int baseLine = rect.y () + painter->fontMetrics ().ascent (); + for (QValueVector <QString>::const_iterator it = textLines.begin (); + it != textLines.end (); + it++) + { + PAINTER_CALL (drawText (rect.x (), baseLine, *it)); + baseLine += painter->fontMetrics ().lineSpacing (); + } + + +#undef PAINTER_CALL +} + +// private +void kpSelection::paintOpaqueText (QPixmap *destPixmap, const QRect &docRect) const +{ + if (!isText () || !m_textStyle.foregroundColor ().isOpaque ()) + return; + + + const QRect modifyingRect = docRect.intersect (boundingRect ()); + if (modifyingRect.isEmpty ()) + return; + + + QBitmap destPixmapMask; + QPainter destPixmapPainter, destPixmapMaskPainter; + + if (destPixmap->mask ()) + { + if (m_textStyle.effectiveBackgroundColor ().isTransparent ()) + { + QRect modifyingRectRelPixmap = modifyingRect; + modifyingRectRelPixmap.moveBy (-docRect.x (), -docRect.y ()); + + // Set the RGB of transparent pixels to foreground colour to avoid + // anti-aliasing the foreground coloured text with undefined RGBs. + kpPixmapFX::setPixmapAt (destPixmap, + modifyingRectRelPixmap, + kpPixmapFX::pixmapWithDefinedTransparentPixels ( + kpPixmapFX::getPixmapAt (*destPixmap, modifyingRectRelPixmap), + m_textStyle.foregroundColor ().toQColor ())); + } + + destPixmapMask = *destPixmap->mask (); + destPixmapMaskPainter.begin (&destPixmapMask); + destPixmapMaskPainter.translate (-docRect.x (), -docRect.y ()); + destPixmapMaskPainter.setPen (Qt::color1/*opaque*/); + destPixmapMaskPainter.setFont (m_textStyle.font ()); + } + + destPixmapPainter.begin (destPixmap); + destPixmapPainter.translate (-docRect.x (), -docRect.y ()); + destPixmapPainter.setPen (m_textStyle.foregroundColor ().toQColor ()); + destPixmapPainter.setFont (m_textStyle.font ()); + + + if (m_textStyle.effectiveBackgroundColor ().isOpaque ()) + { + destPixmapPainter.fillRect ( + boundingRect (), + m_textStyle.effectiveBackgroundColor ().toQColor ()); + + if (destPixmapMaskPainter.isActive ()) + { + destPixmapMaskPainter.fillRect ( + boundingRect (), + Qt::color1/*opaque*/); + } + } + + + ::drawTextLines (&destPixmapPainter, &destPixmapMaskPainter, + textAreaRect (), + textLines ()); + + + if (destPixmapPainter.isActive ()) + destPixmapPainter.end (); + + if (destPixmapMaskPainter.isActive ()) + destPixmapMaskPainter.end (); + + + if (!destPixmapMask.isNull ()) + destPixmap->setMask (destPixmapMask); +} + +// private +QPixmap kpSelection::transparentForegroundTextPixmap () const +{ + if (!isText () || !m_textStyle.foregroundColor ().isTransparent ()) + return QPixmap (); + + + QPixmap pixmap (m_rect.width (), m_rect.height ()); + QBitmap pixmapMask (m_rect.width (), m_rect.height ()); + + + // Iron out stupid case first + if (m_textStyle.effectiveBackgroundColor ().isTransparent ()) + { + pixmapMask.fill (Qt::color0/*transparent*/); + pixmap.setMask (pixmapMask); + return pixmap; + } + + + // -- Foreground transparent, background opaque -- + + + QFont font = m_textStyle.font (); + // TODO: why doesn't "font.setStyleStrategy (QFont::NoAntialias);" + // let us avoid the hack below? + + + QPainter pixmapPainter, pixmapMaskPainter; + + pixmap.fill (m_textStyle.effectiveBackgroundColor ().toQColor ()); + pixmapPainter.begin (&pixmap); + // HACK: Transparent foreground colour + antialiased fonts don't + // work - they don't seem to be able to draw in + // Qt::color0/*transparent*/ (but Qt::color1 seems Ok). + // So we draw in a contrasting color to the background so that + // we can identify the transparent pixels for manually creating + // the mask. + pixmapPainter.setPen ( + QColor (mostContrastingRGB (m_textStyle.effectiveBackgroundColor ().toQRgb () & RGB_MASK))); + pixmapPainter.setFont (font); + + + pixmapMask.fill (Qt::color1/*opaque*/); + pixmapMaskPainter.begin (&pixmapMask); + pixmapMaskPainter.setPen (Qt::color0/*transparent*/); + pixmapMaskPainter.setFont (font); + + + QRect rect (textAreaRect ()); + rect.moveBy (-m_rect.x (), -m_rect.y ()); + ::drawTextLines (&pixmapPainter, &pixmapMaskPainter, + rect, + textLines ()); + + + if (pixmapPainter.isActive ()) + pixmapPainter.end (); + + if (pixmapMaskPainter.isActive ()) + pixmapMaskPainter.end (); + + +#if DEBUG_KP_SELECTION + kdDebug () << "\tinvoking foreground transparency hack" << endl; +#endif + QImage image = kpPixmapFX::convertToImage (pixmap); + QRgb backgroundRGB = image.pixel (0, 0); // on textBorderSize() + + pixmapMaskPainter.begin (&pixmapMask); + for (int y = 0; y < image.height (); y++) + { + for (int x = 0; x < image.width (); x++) + { + if (image.pixel (x, y) == backgroundRGB) + pixmapMaskPainter.setPen (Qt::color1/*opaque*/); + else + pixmapMaskPainter.setPen (Qt::color0/*transparent*/); + + pixmapMaskPainter.drawPoint (x, y); + } + } + pixmapMaskPainter.end (); + + + if (!pixmapMask.isNull ()) + pixmap.setMask (pixmapMask); + + + return pixmap; +} + +// public +void kpSelection::paint (QPixmap *destPixmap, const QRect &docRect) const +{ + if (!isText ()) + { + if (pixmap () && !pixmap ()->isNull ()) + { + kpPixmapFX::paintPixmapAt (destPixmap, + topLeft () - docRect.topLeft (), + transparentPixmap ()); + } + } + else + { + #if DEBUG_KP_SELECTION + kdDebug () << "kpSelection::paint() textStyle: fcol=" + << (int *) m_textStyle.foregroundColor ().toQRgb () + << " bcol=" + << (int *) m_textStyle.effectiveBackgroundColor ().toQRgb () + << endl; + #endif + + if (m_textStyle.foregroundColor ().isOpaque ()) + { + // (may have to antialias with background so don't use m_pixmap) + paintOpaqueText (destPixmap, docRect); + } + else + { + if (!m_pixmap) + { + kdError () << "kpSelection::paint() without m_pixmap?" << endl; + return; + } + + // (transparent foreground slow to render, no antialiasing + // so use m_pixmap cache) + kpPixmapFX::paintPixmapAt (destPixmap, + topLeft () - docRect.topLeft (), + *m_pixmap); + } + } +} + +// private +void kpSelection::calculateTextPixmap () +{ + if (!isText ()) + { + kdError () << "kpSelection::calculateTextPixmap() not text sel" + << endl; + return; + } + + delete m_pixmap; + + if (m_textStyle.foregroundColor().isOpaque ()) + { + m_pixmap = new QPixmap (m_rect.width (), m_rect.height ()); + + if (usesBackgroundPixmapToPaint ()) + kpPixmapFX::fill (m_pixmap, kpColor::transparent); + + paintOpaqueText (m_pixmap, m_rect); + } + else + { + m_pixmap = new QPixmap (transparentForegroundTextPixmap ()); + } +} + + +// public static +QString kpSelection::textForTextLines (const QValueVector <QString> &textLines_) +{ + if (textLines_.isEmpty ()) + return QString::null; + + QString bigString = textLines_ [0]; + + for (QValueVector <QString>::const_iterator it = textLines_.begin () + 1; + it != textLines_.end (); + it++) + { + bigString += QString::fromLatin1 ("\n"); + bigString += (*it); + } + + return bigString; +} + +// public +QString kpSelection::text () const +{ + if (!isText ()) + { + return QString::null; + } + + return textForTextLines (m_textLines); +} + +// public +QValueVector <QString> kpSelection::textLines () const +{ + if (!isText ()) + { + kdError () << "kpSelection::textLines() not a text selection" << endl; + return QValueVector <QString> (); + } + + return m_textLines; +} + +// public +void kpSelection::setTextLines (const QValueVector <QString> &textLines_) +{ + if (!isText ()) + { + kdError () << "kpSelection::setTextLines() not a text selection" << endl; + return; + } + + m_textLines = textLines_; + if (m_textLines.isEmpty ()) + { + kdError () << "kpSelection::setTextLines() passed no lines" << endl; + m_textLines.push_back (QString::null); + } + calculateTextPixmap (); + emit changed (boundingRect ()); +} + +// public static +int kpSelection::textBorderSize () +{ + return 1; +} + +// public +QRect kpSelection::textAreaRect () const +{ + if (!isText ()) + { + kdError () << "kpSelection::textAreaRect() not a text selection" << endl; + return QRect (); + } + + return QRect (m_rect.x () + textBorderSize (), + m_rect.y () + textBorderSize (), + m_rect.width () - textBorderSize () * 2, + m_rect.height () - textBorderSize () * 2); +} + +// public +bool kpSelection::pointIsInTextBorderArea (const QPoint &globalPoint) const +{ + if (!isText ()) + { + kdError () << "kpSelection::pointIsInTextBorderArea() not a text selection" << endl; + return false; + } + + return (m_rect.contains (globalPoint) && !pointIsInTextArea (globalPoint)); +} + +// public +bool kpSelection::pointIsInTextArea (const QPoint &globalPoint) const +{ + if (!isText ()) + { + kdError () << "kpSelection::pointIsInTextArea() not a text selection" << endl; + return false; + } + + return textAreaRect ().contains (globalPoint); +} + + +// public +void kpSelection::textResize (int width, int height) +{ + if (!isText ()) + { + kdError () << "kpSelection::textResize() not a text selection" << endl; + return; + } + + QRect oldRect = m_rect; + + m_rect = QRect (oldRect.x (), oldRect.y (), width, height); + + calculatePoints (); + calculateTextPixmap (); + + emit changed (m_rect.unite (oldRect)); +} + + +// public static +int kpSelection::minimumWidthForTextStyle (const kpTextStyle &) +{ + return (kpSelection::textBorderSize () * 2 + 5); +} + +// public static +int kpSelection::minimumHeightForTextStyle (const kpTextStyle &) +{ + return (kpSelection::textBorderSize () * 2 + 5); +} + +// public static +QSize kpSelection::minimumSizeForTextStyle (const kpTextStyle &textStyle) +{ + return QSize (minimumWidthForTextStyle (textStyle), + minimumHeightForTextStyle (textStyle)); +} + + +// public static +int kpSelection::preferredMinimumWidthForTextStyle (const kpTextStyle &textStyle) +{ + const int about15CharsWidth = + textStyle.fontMetrics ().width ( + QString::fromLatin1 ("1234567890abcde")); + + const int preferredMinWidth = + QMAX (150, + textBorderSize () * 2 + about15CharsWidth); + + return QMAX (minimumWidthForTextStyle (textStyle), + QMIN (250, preferredMinWidth)); +} + +// public static +int kpSelection::preferredMinimumHeightForTextStyle (const kpTextStyle &textStyle) +{ + const int preferredMinHeight = + textBorderSize () * 2 + textStyle.fontMetrics ().height (); + + return QMAX (minimumHeightForTextStyle (textStyle), + QMIN (150, preferredMinHeight)); +} + +// public static +QSize kpSelection::preferredMinimumSizeForTextStyle (const kpTextStyle &textStyle) +{ + return QSize (preferredMinimumWidthForTextStyle (textStyle), + preferredMinimumHeightForTextStyle (textStyle)); +} + + +// public +int kpSelection::minimumWidth () const +{ + if (isText ()) + return minimumWidthForTextStyle (textStyle ()); + else + return 1; +} + +// public +int kpSelection::minimumHeight () const +{ + if (isText ()) + return minimumHeightForTextStyle (textStyle ()); + else + return 1; +} + +// public +QSize kpSelection::minimumSize () const +{ + return QSize (minimumWidth (), minimumHeight ()); +} + + +// public +int kpSelection::textRowForPoint (const QPoint &globalPoint) const +{ + if (!isText ()) + { + kdError () << "kpSelection::textRowForPoint() not a text selection" << endl; + return -1; + } + + if (!pointIsInTextArea (globalPoint)) + return -1; + + const QFontMetrics fontMetrics (m_textStyle.fontMetrics ()); + + int row = (globalPoint.y () - textAreaRect ().y ()) / + fontMetrics.lineSpacing (); + if (row >= (int) m_textLines.size ()) + row = m_textLines.size () - 1; + + return row; +} + +// public +int kpSelection::textColForPoint (const QPoint &globalPoint) const +{ + if (!isText ()) + { + kdError () << "kpSelection::textColForPoint() not a text selection" << endl; + return -1; + } + + int row = textRowForPoint (globalPoint); + if (row < 0 || row >= (int) m_textLines.size ()) + return -1; + + const int localX = globalPoint.x () - textAreaRect ().x (); + + const QFontMetrics fontMetrics (m_textStyle.fontMetrics ()); + + // (should be 0 but call just in case) + int charLocalLeft = fontMetrics.width (m_textLines [row], 0); + + // OPT: binary search or guess location then move + for (int col = 0; col < (int) m_textLines [row].length (); col++) + { + // OPT: fontMetrics::charWidth() might be faster + const int nextCharLocalLeft = fontMetrics.width (m_textLines [row], col + 1); + if (localX <= (charLocalLeft + nextCharLocalLeft) / 2) + return col; + + charLocalLeft = nextCharLocalLeft; + } + + return m_textLines [row].length ()/*past end of line*/; +} + +// public +QPoint kpSelection::pointForTextRowCol (int row, int col) +{ + if (!isText ()) + { + kdError () << "kpSelection::pointForTextRowCol() not a text selection" << endl; + return KP_INVALID_POINT; + } + + if (row < 0 || row >= (int) m_textLines.size () || + col < 0 || col > (int) m_textLines [row].length ()) + { + #if DEBUG_KP_SELECTION && 1 + kdDebug () << "kpSelection::pointForTextRowCol(" + << row << "," + << col << ") out of range" + << " textLines='" + << text () + << "'" + << endl; + #endif + return KP_INVALID_POINT; + } + + const QFontMetrics fontMetrics (m_textStyle.fontMetrics ()); + + const int x = fontMetrics.width (m_textLines [row], col); + const int y = row * fontMetrics.height () + + (row >= 1 ? row * fontMetrics.leading () : 0); + + return textAreaRect ().topLeft () + QPoint (x, y); +} + +// public +kpTextStyle kpSelection::textStyle () const +{ + if (!isText ()) + { + kdError () << "kpSelection::textStyle() not a text selection" << endl; + } + + return m_textStyle; +} + +// public +void kpSelection::setTextStyle (const kpTextStyle &textStyle_) +{ + if (!isText ()) + { + kdError () << "kpSelection::setTextStyle() not a text selection" << endl; + return; + } + + m_textStyle = textStyle_; + calculateTextPixmap (); + emit changed (boundingRect ()); +} + +// public +QPixmap kpSelection::opaquePixmap () const +{ + QPixmap *p = pixmap (); + if (p) + { + return *p; + } + else + { + return QPixmap (); + } +} + +// private +void kpSelection::calculateTransparencyMask () +{ +#if DEBUG_KP_SELECTION + kdDebug () << "kpSelection::calculateTransparencyMask()" << endl; +#endif + + if (isText ()) + { + #if DEBUG_KP_SELECTION + kdDebug () << "\ttext - no need for transparency mask" << endl; + #endif + m_transparencyMask.resize (0, 0); + return; + } + + if (!m_pixmap) + { + #if DEBUG_KP_SELECTION + kdDebug () << "\tno pixmap - no need for transparency mask" << endl; + #endif + m_transparencyMask.resize (0, 0); + return; + } + + if (m_transparency.isOpaque ()) + { + #if DEBUG_KP_SELECTION + kdDebug () << "\topaque - no need for transparency mask" << endl; + #endif + m_transparencyMask.resize (0, 0); + return; + } + + m_transparencyMask.resize (m_pixmap->width (), m_pixmap->height ()); + + QImage image = kpPixmapFX::convertToImage (*m_pixmap); + QPainter transparencyMaskPainter (&m_transparencyMask); + + bool hasTransparent = false; + for (int y = 0; y < m_pixmap->height (); y++) + { + for (int x = 0; x < m_pixmap->width (); x++) + { + if (kpPixmapFX::getColorAtPixel (image, x, y).isSimilarTo (m_transparency.transparentColor (), + m_transparency.processedColorSimilarity ())) + { + transparencyMaskPainter.setPen (Qt::color1/*make it transparent*/); + hasTransparent = true; + } + else + { + transparencyMaskPainter.setPen (Qt::color0/*keep pixel as is*/); + } + + transparencyMaskPainter.drawPoint (x, y); + } + } + + transparencyMaskPainter.end (); + + if (!hasTransparent) + { + #if DEBUG_KP_SELECTION + kdDebug () << "\tcolour useless - completely opaque" << endl; + #endif + m_transparencyMask.resize (0, 0); + return; + } +} + +// public +QPixmap kpSelection::transparentPixmap () const +{ + QPixmap pixmap = opaquePixmap (); + + if (!m_transparencyMask.isNull ()) + { + kpPixmapFX::paintMaskTransparentWithBrush (&pixmap, QPoint (0, 0), + m_transparencyMask); + } + + return pixmap; +} + +// public +kpSelectionTransparency kpSelection::transparency () const +{ + return m_transparency; +} + +// public +bool kpSelection::setTransparency (const kpSelectionTransparency &transparency, + bool checkTransparentPixmapChanged) +{ + if (m_transparency == transparency) + return false; + + m_transparency = transparency; + + bool haveChanged = true; + + QBitmap oldTransparencyMask = m_transparencyMask; + calculateTransparencyMask (); + + + if (oldTransparencyMask.width () == m_transparencyMask.width () && + oldTransparencyMask.height () == m_transparencyMask.height ()) + { + if (m_transparencyMask.isNull ()) + { + #if DEBUG_KP_SELECTION + kdDebug () << "\tboth old and new pixmaps are null - nothing changed" << endl; + #endif + haveChanged = false; + } + else if (checkTransparentPixmapChanged) + { + QImage oldTransparencyMaskImage = kpPixmapFX::convertToImage (oldTransparencyMask); + QImage newTransparencyMaskImage = kpPixmapFX::convertToImage (m_transparencyMask); + + bool changed = false; + for (int y = 0; y < oldTransparencyMaskImage.height () && !changed; y++) + { + for (int x = 0; x < oldTransparencyMaskImage.width () && !changed; x++) + { + if (kpPixmapFX::getColorAtPixel (oldTransparencyMaskImage, x, y) != + kpPixmapFX::getColorAtPixel (newTransparencyMaskImage, x, y)) + { + #if DEBUG_KP_SELECTION + kdDebug () << "\tdiffer at " << QPoint (x, y) + << " old=" << (int *) kpPixmapFX::getColorAtPixel (oldTransparencyMaskImage, x, y).toQRgb () + << " new=" << (int *) kpPixmapFX::getColorAtPixel (newTransparencyMaskImage, x, y).toQRgb () + << endl; + #endif + changed = true; + break; + } + } + } + + if (!changed) + haveChanged = false; + } + } + + + if (haveChanged) + emit changed (boundingRect ()); + + return haveChanged; +} + + +// private +void kpSelection::flipPoints (bool horiz, bool vert) +{ + QRect oldRect = boundingRect (); + + m_points.translate (-oldRect.x (), -oldRect.y ()); + + const QWMatrix matrix = kpPixmapFX::flipMatrix (oldRect.width (), oldRect.height (), + horiz, vert); + m_points = matrix.map (m_points); + + m_points.translate (oldRect.x (), oldRect.y ()); +} + + +// public +void kpSelection::flip (bool horiz, bool vert) +{ +#if DEBUG_KP_SELECTION && 1 + kdDebug () << "kpSelection::flip(horiz=" << horiz + << ",vert=" << vert << ")" << endl; +#endif + + flipPoints (horiz, vert); + + + if (m_pixmap) + { + #if DEBUG_KP_SELECTION && 1 + kdDebug () << "\thave pixmap - flipping that" << endl; + #endif + kpPixmapFX::flip (m_pixmap, horiz, vert); + } + + if (!m_transparencyMask.isNull ()) + { + #if DEBUG_KP_SELECTION && 1 + kdDebug () << "\thave transparency mask - flipping that" << endl; + #endif + kpPixmapFX::flip (&m_transparencyMask, horiz, vert); + } + + + emit changed (boundingRect ()); +} + +#include <kpselection.moc> + |