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Qt Advanced Stylesheets

Advanced Stylesheets with Theming Support for Qt.

The library allows runtime color switching for CSS stylesheet themes including SVG resources and SVG icons. The image below shows the switching of accent color and the switching between dark and light themes. Notice how the icons in the left sidebar change color when switching between dark and light themes.

Features

The main features are:

• runtime switching of CSS colors
• runtime color switching of CSS SVG icons / resources
• runtime color switching of theme aware icons loaded via loadThemeAwareSvgIcon()
• runtime switching of QPalette colors
• definition of CSS styles that switch the complete application design
• definition of XML color themes that allow switching of theme colors (dark / light)
• switching of individual theme color or switching of accent color
• QML support

If you run the full_features example, then you can test the functionality. There are some custom dark themes:

And light:

The library allows you to create stylesheets that contain variables that are replaced at runtime like in this example:

QComboBox:disabled {
  color: {{primaryColor|opacity(0.2)}};
  background-color: {{secondaryColor|opacity(0.75)}};
  border-bottom: 2px solid {{primaryColor|opacity(0.2)}};
}

QComboBox::drop-down {
  border: none;
  color: {{primaryColor}};
  width: 20px;
}

Theme-aware Icons

The library supports loading of theme-aware SVG icons. This allows runtime color switching of application icons like in the toolbar image below.