Vector or high-res icons as standard ones

Please make the icons returned by QStyle::standardIcon vector or of a better resolution.

Below, I list the sizes of the icons available for me (the file used to make the list is attached):

• `SP_TitleBarMenuButton`: 16×16, 64×64
• `SP_TitleBarMinButton`: 10×10, 16×16, 20×20, 32×32, 48×48, 64×64
• `SP_TitleBarMaxButton`: 16×16, 32×32, 48×48
• `SP_TitleBarCloseButton`: 10×10, 16×16, 20×20, 32×32, 48×48, 64×64
• `SP_TitleBarNormalButton`: 16×16, 32×32
• `SP_TitleBarShadeButton`: 16×16, 32×32, 48×48
• `SP_TitleBarUnshadeButton`: 16×16, 32×32, 48×48
• `SP_TitleBarContextHelpButton`: 16×16, 32×32, 48×48
• `SP_DockWidgetCloseButton`: 10×10, 16×16, 20×20, 32×32, 48×48, 64×64
• `SP_MessageBoxInformation`: 16×16, 22×22, 64×64
• `SP_MessageBoxWarning`: 16×16, 22×22, 64×64
• `SP_MessageBoxCritical`: 16×16, 22×22, 64×64
• `SP_MessageBoxQuestion`: 16×16, 22×22, 64×64
• `SP_DesktopIcon`: 16×16, 22×22, 32×32, 48×48, 64×64, 96×96
• `SP_TrashIcon`: 16×16, 22×22, 32×32, 48×48, 64×64, 96×96
• `SP_ComputerIcon`: 16×16, 22×22, 64×64
• `SP_DriveFDIcon`: 16×16, 32×32, 128×128
• `SP_DriveHDIcon`: 16×16, 22×22, 64×64
• `SP_DriveCDIcon`: 16×16, 22×22, 64×64
• `SP_DriveDVDIcon`: 16×16, 22×22, 64×64
• `SP_DriveNetIcon`: 16×16, 32×32, 128×128
• `SP_DirOpenIcon`: 16×16, 22×22, 32×32, 48×48, 64×64, 96×96
• `SP_DirClosedIcon`: 16×16, 22×22, 32×32, 48×48, 64×64, 96×96
• `SP_DirLinkIcon`: 16×16, 22×22, 32×32, 48×48, 64×64, 96×96
• `SP_FileIcon`: 16×16, 22×22, 32×32, 64×64
• `SP_FileLinkIcon`: 16×16, 22×22, 32×32, 64×64
• `SP_ToolBarHorizontalExtensionButton`: 8×8, 16×16, 32×32, 128×128
• `SP_ToolBarVerticalExtensionButton`: 5×5, 10×10, 20×20, 80×80
• `SP_FileDialogStart`: 16×16, 32×32, 128×128
• `SP_FileDialogEnd`: 16×16, 32×32, 128×128
• `SP_FileDialogToParent`: 16×16, 22×22, 24×24, 32×32
• `SP_FileDialogNewFolder`: 16×16, 22×22, 24×24, 32×32
• `SP_FileDialogDetailedView`: 16×16, 22×22, 24×24, 32×32
• `SP_FileDialogInfoView`: 16×16, 32×32, 128×128
• `SP_FileDialogContentsView`: 16×16, 32×32, 128×128
• `SP_FileDialogListView`: 16×16, 22×22, 24×24, 32×32
• `SP_FileDialogBack`: 16×16, 22×22, 24×24, 32×32
• `SP_DirIcon`: 16×16, 22×22, 32×32, 48×48, 64×64, 96×96
• `SP_DialogOkButton`: 16×16, 22×22, 32×32
• `SP_DialogCancelButton`: 16×16, 22×22, 24×24, 32×32
• `SP_DialogHelpButton`: 16×16, 22×22, 24×24
• `SP_DialogOpenButton`: 16×16, 22×22, 32×32, 48×48, 64×64, 96×96
• `SP_DialogSaveButton`: 16×16, 22×22, 24×24, 32×32
• `SP_DialogCloseButton`: 16×16, 22×22, 24×24, 32×32
• `SP_DialogApplyButton`: 16×16, 22×22, 24×24, 32×32
• `SP_DialogResetButton`: 16×16, 22×22, 24×24
• `SP_DialogDiscardButton`: 16×16, 22×22, 24×24, 32×32
• `SP_DialogYesButton`: 16×16, 22×22, 32×32
• `SP_DialogNoButton`: 16×16, 22×22, 24×24, 32×32
• `SP_ArrowUp`: 16×16, 22×22, 24×24, 32×32
• `SP_ArrowDown`: 16×16, 22×22, 24×24, 32×32
• `SP_ArrowLeft`: 16×16, 22×22, 24×24, 32×32
• `SP_ArrowRight`: 16×16, 22×22, 24×24, 32×32
• `SP_ArrowBack`: 16×16, 22×22, 24×24, 32×32
• `SP_ArrowForward`: 16×16, 22×22, 24×24, 32×32
• `SP_DirHomeIcon`: 16×16, 22×22, 32×32, 48×48, 64×64, 96×96
• `SP_CommandLink`: 16×16, 22×22, 24×24, 32×32
• `SP_BrowserReload`: 16×16, 22×22, 24×24, 32×32
• `SP_BrowserStop`: 16×16, 22×22, 24×24
• `SP_MediaPlay`: 16×16, 22×22, 24×24, 32×32
• `SP_MediaStop`: 16×16, 22×22, 24×24, 32×32
• `SP_MediaPause`: 16×16, 22×22, 24×24, 32×32
• `SP_MediaSkipForward`: 16×16, 22×22, 24×24, 32×32
• `SP_MediaSkipBackward`: 16×16, 22×22, 24×24, 32×32
• `SP_MediaSeekForward`: 16×16, 22×22, 24×24, 32×32
• `SP_MediaSeekBackward`: 16×16, 22×22, 24×24, 32×32
• `SP_MediaVolume`: 16×16, 22×22, 24×24
• `SP_MediaVolumeMuted`: 16×16, 22×22, 24×24
• `SP_LineEditClearButton`: 16×16, 22×22
• `SP_TabCloseButton`: 16×16, 32×32, 128×128

It appears that the newer the icon, the better resolution it has. Still, no icon is larger than 128×128 px. Not even `SP_TitleBarMenuButton`, which represents the Qt logo.

I must, however, agree that QIcon::ThemeIcon partially takes over the Standard Pixmaps:

• `SP_MessageBoxInformation` → `DialogInformation`
• `SP_MessageBoxWarning` → `DialogWarning`
• `SP_MessageBoxCritical` → `DialogError`
• `SP_MessageBoxQuestion` → `DialogQuestion`
• `SP_ComputerIcon` → `Computer`
• `SP_DriveHDIcon` → `DriveHarddisk`
• `SP_DriveCDIcon` → `DriveOptical`
• `SP_DriveDVDIcon` → `DriveOptical` as well
• `SP_DriveNetIcon` → `NetworkWired` and `NetworkWireless`
• `SP_DirOpenIcon` → `FolderOpen`
• `SP_MediaPlay` → `MediaPlaybackStart`
• `SP_MediaStop` → `MediaPlaybackStop`
• `SP_MediaPause` → `MediaPlaybackPause`
• `SP_MediaSkipForward` → `MediaSkipForward`
• `SP_MediaSkipBackward` → `MediaSkipBackward`
• `SP_MediaSeekForward` → `MediaSeekForward`
• `SP_MediaSeekBackward` → `MediaSeekBackward`
• `SP_MediaVolume` → `AudioVolumeHigh`, `AudioVolumeLow`, and `AudioVolumeMedium`
• `SP_MediaVolumeMuted` → `AudioVolumeMuted`
• `SP_LineEditClearButton` → `EditClear`

The correspondence is far from complete, though.

There are similar reports about the icons in QMessageBox (QTBUG-52622) and in the Qt Tools interface (QTBUG-71217). The first one is resolved.