Add Text tool

closes #11 Add an initial version of the text tool. This commit adds: - Basic text tool. - On demand thickness and color update. - Generalized logic for future widget based tools.
2018-05-06 13:56:45 +02:00
parent 40605ab6b5
commit 5432614651
34 changed files with 666 additions and 57 deletions
--- a/src/tools/text/textwidget.cpp
+++ b/src/tools/text/textwidget.cpp
@@ -0,0 +1,87 @@
+// Copyright(c) 2017-2018 Alejandro Sirgo Rica & Contributors
+//
+// This file is part of Flameshot.
+//
+//     Flameshot 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.
+//
+//     Flameshot 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 Flameshot.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "textwidget.h"
+
+TextWidget::TextWidget(QWidget *parent) : QTextEdit(parent) {
+    setStyleSheet("TextWidget { background: transparent; }");
+    connect(this, &TextWidget::textChanged,
+            this, &TextWidget::adjustSize);
+    connect(this, &TextWidget::textChanged,
+            this, &TextWidget::emitTextUpdated);
+    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    setContextMenuPolicy(Qt::NoContextMenu);
+}
+
+void TextWidget::showEvent(QShowEvent *e) {
+    QFont font;
+    QFontMetrics fm(font);
+    setFixedWidth(fm.lineSpacing() *6);
+    setFixedHeight(fm.lineSpacing() * 2.5);
+    m_baseSize = size();
+    m_minSize = m_baseSize;
+    QTextEdit::showEvent(e);
+    adjustSize();
+}
+
+void TextWidget::resizeEvent(QResizeEvent *e) {
+    m_minSize.setHeight(qMin(m_baseSize.height(), height()));
+    m_minSize.setWidth(qMin(m_baseSize.width(), width()));
+    QTextEdit::resizeEvent(e);
+}
+
+void TextWidget::setFont(const QFont &f) {
+    QTextEdit::setFont(f);
+    adjustSize();
+}
+
+void TextWidget::updateFont(const QFont &f) {
+    setFont(f);
+}
+
+void TextWidget::setFontPointSize(qreal s) {
+    QFont f = font();
+    f.setPointSize(s);
+    setFont(f);
+}
+
+void TextWidget::setTextColor(const QColor &c) {
+    QString s("TextWidget { background: transparent; color: %1; }");
+    setStyleSheet(s.arg(c.name()));
+}
+
+void TextWidget::adjustSize() {
+    QString &&text = this->toPlainText();
+
+    QFontMetrics fm(font());
+    QRect bounds = fm.boundingRect(QRect(), 0, text);
+    int pixelsWide = bounds.width() + fm.lineSpacing();
+    int pixelsHigh = bounds.height() * 1.15 + fm.lineSpacing();
+    if (pixelsWide < m_minSize.width()) {
+        pixelsWide = m_minSize.width();
+    }
+    if (pixelsHigh < m_minSize.height()) {
+        pixelsHigh = m_minSize.height();
+    }
+
+    this->setFixedSize(pixelsWide, pixelsHigh);
+}
+
+void TextWidget::emitTextUpdated() {
+    emit textUpdated(this->toPlainText());
+}