• Thorben Kroeger's avatar
    Implement theming for QtCreator · 84f5585b
    Thorben Kroeger authored
    Adds a 'Theme' tab to the environment settings and a '-theme' command
    line option.
    A theme is a combination of colors, gradients, flags and style
    information.
    
    There are two themes:
    - 'default': preserves the current default look
    - 'dark': uses a more flat for many widgets, dark color theme
      for everything
    
    This does not use a stylesheet (too limited), but rather sets
    the palette via C++ and modifies drawing behavior.
    Overall, the look is more flat (removed some gradients and bevels).
    
    Tested on Ubuntu 14.04 using Qt 5.4 and running on a KDE
    Desktop (Oxygen base style).
    
    For a screenshot, see
    https://gist.github.com/thorbenk/5ab06bea726de0aa7473
    
    Changes:
    - Introduce class Theme, defining the interface how to access theme
      specific settings. The class reads a .creatortheme file (INI file, via
      QSettings)
    
      - Define named colors in the [Palette] section
        (see dark.creatortheme for example usage)
    
      - Use either named colors of AARRGGBB (hex) in the [Colors]
        section
    
      - A file ending with .creatortheme may be supplied
        to the '-theme' command line option
    
    - A global Theme instance can be accessed via creatorTheme()
    
    - Query colors, gradients, icons and flags from the theme
      were possible (TODO: use this in more places...)
    
    - There are very many color roles. It seems better to me
      to describe the role clearly, and then to consolidate later
      in the actual theme by assigning the same color.
      For example, one can set the text color of the output pane button
      individualy.
    
    - Many elements are also drawn differently.
      For the dark theme, I wanted to have a flatter look.
      - Introduce Theme::WidgetStyle enum, for now {Original, Flat}.
      - The theme specifies which kind of widget style it wants.
      - The drawing code queries the theme's style flag and
        switches between the original, gradient based look and
        the new, flat look.
    
    - Create some custom icons which look better on dark background
      (wip, currently folder/file icons)
    
    - Let ManhattanStyle draw some elements for non-panelwidgets, too
      (open/close arrows in QTreeView, custom folder/file icons)
    
    - For the welcomescreen, pass the WelcomeTheme class.
      WelcomeTheme exposes theme colors as Q_PROPERTY accessible from
      .qml
    
    - Themes can be modified via the 'Themes' tab in the environment
      settings.
    
    TODO:
    * Unify image handling
    * Avoid style name references
    * Fix gradients
    
    Change-Id: I92c2050ab0fb327649ea1eff4adec973d2073944
    Reviewed-by: default avatarThomas Hartmann <Thomas.Hartmann@digia.com>
    Reviewed-by: default avatarhjk <hjk121@nokiamail.com>
    84f5585b
theme.cpp 12 KB