Fix gui issues on high DPI monitor

Fix LineEdit widget size issues
Up-scale the icons on statusbar
Up-scale the icons in options dialog. Closes #7729.
Fix small icons in cookie manager
Fix progress bar height
Fix small icons in confirm delete dialog
Fix small icons in options dialog
Fix small images in about dialog

src/gui/lineedit/CMakeLists.txt

@@ -6,11 +6,5 @@ set(QBT_LINEEDIT_HEADERS
 src/lineedit.h
 )
 
-set(QBT_LINEEDIT_RESOURCES
-resources/lineeditimages.qrc
-)
-
 add_library(qbt_lineedit STATIC ${QBT_LINEEDIT_SOURCES} ${QBT_LINEEDIT_HEADERS})
 target_link_libraries(qbt_lineedit Qt5::Widgets)
-
-qbt_target_sources(${QBT_LINEEDIT_RESOURCES})

src/gui/lineedit/lineedit.pri

@@ -1,4 +1,3 @@
 INCLUDEPATH += $$PWD/src
 HEADERS += $$PWD/src/lineedit.h
 SOURCES += $$PWD/src/lineedit.cpp
-RESOURCES += $$PWD/resources/lineeditimages.qrc

src/gui/lineedit/resources/lineeditimages.qrc

@@ -1,5 +0,0 @@
-<!DOCTYPE RCC><RCC version="1.0">
-<qresource>
-  <file>lineeditimages/search.png</file>
-</qresource>
-</RCC>

src/gui/lineedit/src/lineedit.cpp

@@ -8,37 +8,34 @@
 ****************************************************************************/
 
 #include "lineedit.h"
+
 #include <algorithm>
+
+#include <QResizeEvent>
 #include <QStyle>
 #include <QToolButton>
-#include <QResizeEvent>
+
+#include "guiiconprovider.h"
 
 LineEdit::LineEdit(QWidget *parent)
     : QLineEdit(parent)
 {
-    QPixmap pixmap1(":/lineeditimages/search.png");
-    searchButton = new QToolButton(this);
-    searchButton->setIcon(QIcon(pixmap1));
-    searchButton->setIconSize(pixmap1.size());
-    searchButton->setCursor(Qt::ArrowCursor);
-    searchButton->setStyleSheet("QToolButton { border: none; padding: 2px; }");
-    QSize searchButtonHint = searchButton->sizeHint();
+    m_searchButton = new QToolButton(this);
+    m_searchButton->setIcon(GuiIconProvider::instance()->getIcon("edit-find"));
+    m_searchButton->setCursor(Qt::ArrowCursor);
+    m_searchButton->setStyleSheet("QToolButton { border: none; padding: 2px; }");
+
+    setStyleSheet(QString("QLineEdit { padding-left: %1px; }").arg(m_searchButton->sizeHint().width()));  // padding between text and widget borders
 
-    QSize clearButtonHint(0, 0);
     setClearButtonEnabled(true);
-    setStyleSheet(QString("QLineEdit { padding-left: %1px; }").arg(searchButtonHint.width()));  // padding between text and widget borders
 
-    QSize widgetHint = sizeHint();
-    int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
-    setMaximumHeight(std::max({ widgetHint.height(), searchButtonHint.height(), clearButtonHint.height() }) + frameWidth * 2);
+    const int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
+    setMaximumHeight(std::max(sizeHint().height(), m_searchButton->sizeHint().height()) + frameWidth * 2);
     setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
 }
 
 void LineEdit::resizeEvent(QResizeEvent *e)
 {
-    int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
-
-    QSize sz = searchButton->sizeHint();
-    searchButton->move(frameWidth, (e->size().height() - sz.height()) / 2);
+    const int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
+    m_searchButton->move(frameWidth, (e->size().height() - m_searchButton->sizeHint().height()) / 2);
 }
-

src/gui/lineedit/src/lineedit.h

@@ -22,10 +22,10 @@ public:
     LineEdit(QWidget *parent);
 
 protected:
-    void resizeEvent(QResizeEvent *e);
+    void resizeEvent(QResizeEvent *e) override;
 
 private:
-    QToolButton *searchButton;
+    QToolButton *m_searchButton;
 };
 
 #endif // LIENEDIT_H