forked from blue/squawk
69 lines
1.9 KiB
C++
69 lines
1.9 KiB
C++
// Squawk messenger.
|
|
// Copyright (C) 2019 Yury Gubich <blue@macaw.me>
|
|
//
|
|
// 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 3 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, see <http://www.gnu.org/licenses/>.
|
|
|
|
#ifndef TEXTMETER_H
|
|
#define TEXTMETER_H
|
|
|
|
#include <list>
|
|
#include <set>
|
|
|
|
#include <QFontMetrics>
|
|
#include <QFont>
|
|
#include <QSize>
|
|
#include <QFontDatabase>
|
|
|
|
class TextMeter
|
|
{
|
|
public:
|
|
TextMeter();
|
|
~TextMeter();
|
|
void initializeFonts(const QFont& font);
|
|
QSize boundingSize(const QString& text, const QSize& limits) const;
|
|
|
|
private:
|
|
QFontDatabase base;
|
|
std::list<QFontMetrics> fonts;
|
|
|
|
struct Helper {
|
|
Helper(int maxWidth);
|
|
int width;
|
|
int height;
|
|
int wordWidth;
|
|
int wordHeight;
|
|
int delayedSpaceWidth;
|
|
int maxWidth;
|
|
bool wordBeganWithTheLine;
|
|
QString text;
|
|
QString word;
|
|
QChar lastSpace;
|
|
QSize size;
|
|
|
|
void computeNewLine(const QFontMetrics& metrics, int horizontalAdvance, const QChar& ch);
|
|
void computeChar(const QChar& ch, const QFontMetrics& metrics);
|
|
void computeNewWord();
|
|
void beginNewLine();
|
|
bool lineOverflow(const QFontMetrics& metrics, int horizontalAdvance, const QChar& ch);
|
|
};
|
|
|
|
static bool newLine(const QChar& ch);
|
|
static bool newWord(const QChar& ch);
|
|
static bool visible(const QChar& ch);
|
|
static bool printOnLineBreak(const QChar& ch);
|
|
|
|
};
|
|
|
|
#endif // TEXTMETER_H
|