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Added controls to change text and background color.
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/*************************************************************************** | ||
* Copyright (C) 2002-2019 by Chernov A.A. * | ||
* [email protected] * | ||
* * | ||
* 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/>. * | ||
***************************************************************************/ | ||
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#include "colorbox.h" | ||
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#include <QtGui/QPainter> | ||
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#include <QtWidgets/QLayout> | ||
#include <QtWidgets/QToolButton> | ||
#include <QtWidgets/QStyle> | ||
#include <QtWidgets/QColorDialog> | ||
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#include "colorbox_private.h" | ||
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// class QColorBox | ||
QColorBox::QColorBox(QWidget *parent) | ||
: QFrame(parent) | ||
{ | ||
setFrameStyle(QFrame::NoFrame); | ||
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layout = new QHBoxLayout(this); | ||
comboBox = new QColorComboBox(this); | ||
layout->addWidget(comboBox, 0); | ||
tool = new QToolButton(this); | ||
tool->setText(tr("...")); | ||
layout->addWidget(tool, 0); | ||
customColor = QColor(0, 0, 0); | ||
defaultColor = QColor(0, 0, 0); | ||
fill(); | ||
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connect(comboBox, SIGNAL(activated(int)), SLOT(slotChanged(int))); | ||
connect(tool, SIGNAL(clicked()), this, SLOT(slotSelColor())); | ||
} | ||
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#define COLORTBL_SZ 16 | ||
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void QColorBox::fill() | ||
{ | ||
static const int color_tbl[COLORTBL_SZ][3] = | ||
{ | ||
{ 255, 255, 255 }, | ||
{ 192, 192, 192 }, | ||
{ 128, 128, 128 }, | ||
{ 0, 0, 0 }, | ||
{ 255, 0, 0 }, | ||
{ 128, 0, 0 }, | ||
{ 0, 255, 0 }, | ||
{ 0, 128, 0 }, | ||
{ 0, 0, 255 }, | ||
{ 0, 0, 128 }, | ||
{ 255, 255, 0 }, | ||
{ 128, 128, 0 }, | ||
{ 0, 255, 255 }, | ||
{ 0, 128, 128 }, | ||
{ 255, 0, 255 }, | ||
{ 128, 0, 128 }, | ||
}; | ||
comboBox->insertItem(0, tr("default")); | ||
comboBox->setItemData(0, defaultColor, Qt::BackgroundRole); | ||
comboBox->setItemData(0, defaultColor, Qt::DecorationRole); | ||
QColor c; | ||
for (int i = 0; i < COLORTBL_SZ; i++) | ||
{ | ||
c = QColor(color_tbl[i][0], color_tbl[i][1], color_tbl[i][2]); | ||
comboBox->insertItem(i + 1, /*c.name()*/QString()); | ||
comboBox->setItemData(i + 1, c, Qt::BackgroundRole); | ||
comboBox->setItemData(i + 1, c, Qt::DecorationRole); | ||
} | ||
comboBox->insertItem(COLORTBL_SZ + 1, tr("custom")); | ||
comboBox->setItemData(COLORTBL_SZ + 1, customColor, Qt::BackgroundRole); | ||
comboBox->setItemData(COLORTBL_SZ + 1, customColor, Qt::DecorationRole); | ||
} | ||
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QColorBox::~QColorBox() | ||
{ | ||
} | ||
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QColor QColorBox::color() | ||
{ | ||
//return qVariantValue<QColor>(comboBox->itemData(comboBox->currentIndex(), Qt::BackgroundRole)); | ||
return comboBox->itemData(comboBox->currentIndex(), Qt::BackgroundRole).value<QColor>(); | ||
} | ||
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void QColorBox::setColor(const QColor& c) | ||
{ | ||
int i; | ||
int ind = -1; | ||
QColor item_color; | ||
for (i = 0; i < COLORTBL_SZ + 1; i++) | ||
{ | ||
//item_color = qVariantValue<QColor>(comboBox->itemData(comboBox->currentIndex(), Qt::BackgroundRole)); | ||
item_color = (comboBox->itemData(comboBox->currentIndex(), Qt::BackgroundRole).value<QColor>()); | ||
if (item_color == c) | ||
{ | ||
ind = i; | ||
break; | ||
} | ||
} | ||
if (ind >= 0) | ||
comboBox->setCurrentIndex(ind); | ||
else | ||
{ | ||
setCustomColor(c); | ||
comboBox->setCurrentIndex(COLORTBL_SZ + 1); | ||
} | ||
} | ||
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void QColorBox::setCustomColor(const QColor& c) | ||
{ | ||
if (!c.isValid()) return; | ||
customColor = c; | ||
comboBox->setItemData(COLORTBL_SZ + 1, customColor, Qt::BackgroundRole); | ||
comboBox->setItemData(COLORTBL_SZ + 1, customColor, Qt::DecorationRole); | ||
if (comboBox->currentIndex() == COLORTBL_SZ + 1) | ||
{ | ||
emit colorChanged(c); | ||
comboBox->repaint(); | ||
} | ||
} | ||
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void QColorBox::setDefaultColor(const QColor& c) | ||
{ | ||
if (!c.isValid()) return; | ||
defaultColor = c; | ||
comboBox->setItemData(0, defaultColor, Qt::BackgroundRole); | ||
comboBox->setItemData(0, defaultColor, Qt::DecorationRole); | ||
if (comboBox->currentIndex() == 0) | ||
{ | ||
emit colorChanged(c); | ||
repaint(); | ||
} | ||
} | ||
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void QColorBox::slotSelColor() | ||
{ | ||
QColor sc = customColor; | ||
sc = QColorDialog::getColor(sc, this); | ||
if (sc.isValid()) | ||
{ | ||
//setCustomColor(sc); | ||
//comboBox->setCurrentItem(COLORTBL_SZ + 1); | ||
setColor(sc); | ||
emit colorChanged(sc); | ||
} | ||
} | ||
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void QColorBox::slotChanged(int idx) | ||
{ | ||
QColor c = comboBox->itemData(idx, Qt::BackgroundRole).value<QColor>(); | ||
emit colorChanged(c); | ||
} | ||
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void QColorBox::languageChange() | ||
{ | ||
comboBox->setItemText(0, tr("default")); | ||
comboBox->setItemText(COLORTBL_SZ + 1, tr("custom")); | ||
} |
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/*************************************************************************** | ||
* Copyright (C) 2002-2019 by Chernov A.A. * | ||
* [email protected] * | ||
* * | ||
* 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/>. * | ||
***************************************************************************/ | ||
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#ifndef COLORBOX_H | ||
#define COLORBOX_H | ||
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#include <QtWidgets/QFrame> | ||
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class QHBoxLayout; | ||
class QToolButton; | ||
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class QColorComboBox; | ||
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/** | ||
\brief Элемент управления для выбора цвета. | ||
Этот элемент управления позволяет выбирать различные цвета. Он состоит из двух компонентов: | ||
QComboBox и QToolButton. Можно выбрать цвет из списка, или если нужного цвета нет, выбрать | ||
цвет с помощью стандартного диалога выбора цвета, нажатием на кнопку QToolButton, при этом | ||
выбранный цвет будет отображен в конце списка с пометкой "custom". Если пользователь не | ||
выбирает цвет, то используется цвет "по умолчанию", представленый самым первым элементом списка | ||
и задавемый функцией setDefaultColor(QColor& c). Всего в списке находится 16 цветов, с учётом | ||
элементов "default" и "custom" всего в QComboBox 18 элементов. | ||
\author Чернов А.А. | ||
*/ | ||
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class QColorBox : public QFrame | ||
{ | ||
Q_OBJECT | ||
public: | ||
/** | ||
* Конструктор. | ||
* Создает элемент управления. | ||
* \param parent родительский виджет, обязательно должен существовать; | ||
*/ | ||
QColorBox(QWidget *parent); | ||
/** | ||
* Деструктор. | ||
* Удаляет все внутренние переменные. | ||
*/ | ||
~QColorBox(); | ||
/** | ||
* Возвращает выбранный цвет. | ||
*/ | ||
QColor color(); | ||
/** | ||
* Устанавливает текущий выбранный цвет. | ||
* Если этот цвет c найден в списке QComboBox, то выделяется соответствующий | ||
* элемент списка, иначе устанавливается как дополнительный цвет. См. setCustomColor(). | ||
* \param c устанавливаемый цвет. | ||
*/ | ||
void setColor(const QColor& c); | ||
/** | ||
* Устанавливает цвет по умолчанию. Это цвет находится в самом начале списка цветов. | ||
* Таким образом, если пользователь не выбирает цвет в списке, то именно этот цвет | ||
* возвращется функцией color(). | ||
* \param c устанавливаемый цвет. | ||
*/ | ||
void setDefaultColor(const QColor& c); | ||
signals: | ||
/** | ||
* Этот сигнал вызывается, когда изменяется значение цвета. | ||
* Другими словами значения возвращаемые функцией color() | ||
* до и после этого сигнала разные. | ||
*/ | ||
void colorChanged(QColor); | ||
protected: | ||
/** | ||
* Устанавливает дополнительный цвет. Этот цвет позднее может быть изменён | ||
* пользователем. По умолчанию QColor(0, 0, 0). | ||
* \param c устанавливаемый цвет. | ||
*/ | ||
void setCustomColor(const QColor& c); | ||
/** | ||
* Для внутреннего использования. Заполняет список цветов. | ||
*/ | ||
void fill(); | ||
protected slots: | ||
virtual void languageChange(); | ||
void slotSelColor(); | ||
void slotChanged(int); | ||
private: | ||
QHBoxLayout* layout; | ||
QColorComboBox* comboBox; | ||
QToolButton* tool; | ||
QColor defaultColor; | ||
QColor customColor; | ||
}; | ||
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#endif |
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/*************************************************************************** | ||
* Copyright (C) 2002-2019 by Chernov A.A. * | ||
* [email protected] * | ||
* * | ||
* 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/>. * | ||
***************************************************************************/ | ||
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#include "colorbox_private.h" | ||
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#include <QtWidgets/QStylePainter> | ||
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#define MARGIN 6 | ||
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QColorComboBox::QColorComboBox(QWidget* parent) | ||
: QComboBox(parent) | ||
{ | ||
} | ||
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QColorComboBox::~QColorComboBox() | ||
{ | ||
} | ||
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void QColorComboBox::paintEvent(QPaintEvent*) | ||
{ | ||
QStylePainter painter(this); | ||
painter.setPen(palette().color(QPalette::Text)); | ||
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// draw the combobox frame, focusrect and selected etc. | ||
QStyleOptionComboBox opt; | ||
initStyleOption(&opt); | ||
painter.drawComplexControl(QStyle::CC_ComboBox, opt); | ||
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// draw the icon and text | ||
//painter.drawControl(QStyle::CE_ComboBoxLabel, opt); | ||
QString text = currentText(); | ||
QColor color = itemData(currentIndex(), Qt::BackgroundRole).value<QColor>(); | ||
QPen pen = painter.pen(); | ||
if (color.isValid()) | ||
{ | ||
QBrush brush(color, Qt::SolidPattern); | ||
painter.setPen(Qt::NoPen); | ||
painter.fillRect(opt.rect.left() + MARGIN, opt.rect.top() + MARGIN, opt.rect.width() - 2*MARGIN, opt.rect.height() - 2*MARGIN, brush); | ||
} | ||
pen.setColor(QColor(255 - color.red(), 255 - color.green(), 255 - color.blue())); | ||
painter.setPen(pen); | ||
QRect r = opt.rect; | ||
r.setLeft(r.left() + MARGIN); | ||
r.setWidth(r.width() - 2*MARGIN); | ||
painter.drawText(r, Qt::AlignLeft | Qt::AlignVCenter | Qt::TextSingleLine, text); | ||
} |
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/*************************************************************************** | ||
* Copyright (C) 2002-2019 by Chernov A.A. * | ||
* [email protected] * | ||
* * | ||
* 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/>. * | ||
***************************************************************************/ | ||
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#ifndef COLORBOX_PRIVATE_H | ||
#define COLORBOX_PRIVATE_H | ||
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#include <QtWidgets/QComboBox> | ||
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class QColorComboBox: public QComboBox | ||
{ | ||
public: | ||
QColorComboBox(QWidget* parent = 0); | ||
~QColorComboBox(); | ||
protected: | ||
virtual void paintEvent(QPaintEvent*); | ||
}; | ||
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#endif // COLORBOX_PRIVATE_H |
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