QSizeF AdjustColumnRowManipulator::textSize(const QString& text, const Style& style) const
{
QSizeF size;
DummyWidget dummyWiget;
const QFontMetricsF fontMetrics(style.font(), &dummyWiget);
// Set size to correct values according to
// if the text is horizontal, vertical or rotated.
if (!style.verticalText() && !style.angle()) {
// Horizontal text.
size = fontMetrics.size(0, text);
double offsetFont = 0.0;
if ((style.valign() == Style::Bottom) && style.underline())
offsetFont = fontMetrics.underlinePos() + 1;
size.setHeight((fontMetrics.ascent() + fontMetrics.descent() + offsetFont)
*(text.count('\n') + 1));
} else if (style.angle() != 0) {
// Rotated text.
const double height = fontMetrics.ascent() + fontMetrics.descent();
const double width = fontMetrics.width(text);
size.setHeight(height * ::cos(style.angle() * M_PI / 180)
+ qAbs(width * ::sin(style.angle() * M_PI / 180)));
size.setWidth(qAbs(height * ::sin(style.angle() * M_PI / 180))
+ width * ::cos(style.angle() * M_PI / 180));
} else {
// Vertical text.
qreal width = 0.0;
for (int i = 0; i < text.length(); i++)
width = qMax(width, fontMetrics.width(text.at(i)));
size.setWidth(width);
size.setHeight((fontMetrics.ascent() + fontMetrics.descent())
* text.length());
}
return size;
}
void QgsDecorationTitle::render( const QgsMapSettings &mapSettings, QgsRenderContext &context )
{
Q_UNUSED( mapSettings )
if ( !enabled() )
return;
context.painter()->save();
context.painter()->setRenderHint( QPainter::Antialiasing, true );
QString displayString = QgsExpression::replaceExpressionText( mLabelText, &context.expressionContext() );
QStringList displayStringList = displayString.split( '\n' );
QFontMetricsF fm( mTextFormat.scaledFont( context ) );
QFontMetricsF textMetrics = QgsTextRenderer::fontMetrics( context, mTextFormat );
double textDescent = textMetrics.descent();
double textWidth = QgsTextRenderer::textWidth( context, mTextFormat, displayStringList, &fm );
double textHeight = QgsTextRenderer::textHeight( context, mTextFormat, displayStringList, QgsTextRenderer::Point, &fm );
QPaintDevice *device = context.painter()->device();
int deviceHeight = device->height() / device->devicePixelRatioF();
int deviceWidth = device->width() / device->devicePixelRatioF();
float xOffset( 0 ), yOffset( 0 );
// Set margin according to selected units
switch ( mMarginUnit )
{
case QgsUnitTypes::RenderMillimeters:
{
int pixelsInchX = context.painter()->device()->logicalDpiX();
void TextObject::prepareLineInfos() const
{
const TextSymbol* text_symbol = reinterpret_cast<const TextSymbol*>(symbol);
double scaling = text_symbol->calculateInternalScaling();
QFontMetricsF metrics = text_symbol->getFontMetrics();
double line_spacing = text_symbol->getLineSpacing() * metrics.lineSpacing();
double paragraph_spacing = scaling * text_symbol->getParagraphSpacing() + (text_symbol->hasLineBelow() ? (scaling * (text_symbol->getLineBelowDistance() + text_symbol->getLineBelowWidth())) : 0);
double ascent = metrics.ascent();
bool word_wrap = ! hasSingleAnchor();
double box_width = word_wrap ? (scaling * getBoxWidth()) : 0.0;
double box_height = word_wrap ? (scaling * getBoxHeight()) : 0.0;
int text_end = text.length();
const QLatin1Char line_break('\n');
const QLatin1Char part_break('\t');
const QLatin1Char word_break(' ');
line_infos.clear();
// Initialize offsets
double line_x = 0.0;
if (h_align == TextObject::AlignLeft)
line_x -= 0.5 * box_width;
else if (h_align == TextObject::AlignRight)
line_x += 0.5 * box_width;
double line_y = 0.0;
if (v_align == TextObject::AlignTop || v_align == TextObject::AlignBaseline)
line_y += -0.5 * box_height;
if (v_align != TextObject::AlignBaseline)
line_y += ascent;
// Determine lines and parts
//double next_line_x_offset = 0; // to keep indentation after word wrap in a line with tabs
int num_paragraphs = 0;
int line_num = 0;
int line_start = 0;
while (line_start <= text_end)
{
// Initialize input line
double line_width = 0.0;
int line_end = text.indexOf(line_break, line_start);
if (line_end == -1)
line_end = text_end;
bool paragraph_end = true;
std::vector<TextObjectPartInfo> part_infos;
int part_start = line_start;
double part_x = line_x;
while (part_start <= line_end)
{
// Initialize part (sequence of letters terminated by tab or line break)
int part_end = text.indexOf(part_break, part_start);
if (part_end == -1)
part_end = line_end;
else if (part_end > line_end)
part_end = line_end;
if (part_start > 0 && text[part_start - 1] == part_break)
part_x = line_x + text_symbol->getNextTab(part_x - line_x);
QString part = text.mid(part_start, part_end - part_start);
double part_width = metrics.boundingRect(part).width();
if (word_wrap)
{
// shrink overflowing part to maximum possible size
while (part_x + part_width - line_x > box_width)
{
// find latest possible break
int new_part_end = text.lastIndexOf(word_break, part_end - 1);
if (new_part_end <= part_start)
{
// part won't fit
if (part_start > line_start)
{
// don't put another part on this line
part_end = part_start - 1;
paragraph_end = false;
}
break;
}
paragraph_end = false;
// Shrink the part and the line
part_end = new_part_end;
part = text.mid(part_start, part_end - part_start);
part_width = metrics.width(part);
line_end = part_end;
}
}
if (part_end < part_start)
break;
// Add the current part
part_infos.push_back( { part, part_start, part_end, part_x, metrics.width(part), metrics } );
// Advance to next part position
part_start = part_end + 1;
part_x += part_width;
}
TextObjectPartInfo& last_part_info = part_infos.back();
line_end = last_part_info.end_index;
line_width = last_part_info.part_x + last_part_info.width - line_x;
// Jump over whitespace after the end of the line and check if it contains a newline character to determine if it is a paragraph end
int next_line_start = line_end + 1;
/*while (next_line_start < text.size() && (text[next_line_start] == line_break || text[next_line_start] == part_break || text[next_line_start] == word_break))
{
if (text[next_line_start - 1] == line_break)
{
paragraph_end = true;
break;
}
++next_line_start;
}*/
line_infos.push_back( { line_start, line_end, paragraph_end, line_x, line_y, line_width, metrics.ascent(), metrics.descent(), part_infos } );
// Advance to next line
line_y += line_spacing;
if (paragraph_end)
{
line_y += paragraph_spacing;
num_paragraphs++;
}
line_num++;
line_start = next_line_start;
}
// Update the line and part offset for every other alignment than top-left or baseline-left
double delta_y = 0.0;
if (v_align == TextObject::AlignBottom || v_align == TextObject::AlignVCenter)
{
int num_lines = getNumLines();
double height = ascent + (num_lines - 1) * line_spacing + (num_paragraphs - 1) * paragraph_spacing;
if (v_align == TextObject::AlignVCenter)
delta_y = -0.5 * height;
else if (v_align == TextObject::AlignBottom)
delta_y = -height + 0.5 * box_height;
}
if (delta_y != 0.0 || h_align != TextObject::AlignLeft)
{
int num_lines = getNumLines();
for (int i = 0; i < num_lines; i++)
{
TextObjectLineInfo* line_info = &line_infos[i];
double delta_x = 0.0;
if (h_align == TextObject::AlignHCenter)
delta_x = -0.5 * line_info->width;
else if (h_align == TextObject::AlignRight)
delta_x -= line_info->width;
line_info->line_x += delta_x;
line_info->line_y += delta_y;
int num_parts = line_info->part_infos.size();
for (int j = 0; j < num_parts; j++)
{
line_info->part_infos.at(j).part_x += delta_x;
}
}
}
}