Qt自定義控件之顔色對話框QColorDialog/Qt Color Widgets

1、官方自帶

Qt官方自帶的QColorDialog類提供了一個指定顔色的對話框部件。

#include <QColorDialog>

QColor i = QColorDialog::getColor(Qt::red, this,

                                         tr("顔色對話框"),

                                         QColorDialog::ShowAlphaChannel);

2、自定義

但是好多開源項目都使用了自定義控件Qt Color Widgets。

https://gitlab.com/mattia.basaglia/Qt-Color-Widgets

C++使用方法：

1.pro檔案

LIBS += -L$${DESTDIR} #lib path

LIBS += "QtColorWidgets-Qt52.lib"

INCLUDEPATH += ../color_widgets/include/

INCLUDEPATH += ../color_widgets/include/QtColorWidgets/

2.cpp源檔案

#include "color_dialog.hpp"
void Designer::on_actionColor_triggered()
{
    color_widgets::ColorDialog dlg;
    connect(&dlg, &color_widgets::ColorDialog::colorSelected, this, &Designer::color_changed);
    dlg.exec();
}
void Designer::color_changed(QColor color)
{
    int r, g, b, a;
    color.getRgb(&r, &g, &b, &a);
    color.getHsv(&r, &g, &b, &a);
}      

https://github.com/pencil2d/pencil

https://github.com/douzhongqiang/EasyCanvas

https://github.com/caryoscelus/rainynite-studio https://github.com/caryoscelus/Qt-Color-Widgets

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https://github.com/frankosterfeld/qtkeychain

獨立于平台的Qt API，用于安全存儲密碼。