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* grub-core/gfxmenu/theme_loader.c: New global options for the

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theme background image handling. desktop-image-scale-method,
       desktop-image-h-align, desktop-image-v-align.
       * grub-core/gfxmenu/view.c: Likewise.
       * include/gfxmenu_view.h: Likewise.
       * include/bitmap_scale.h: Proportional scale functions introduced.
       * grub-core/video/bitmap_scale.c: Likewise. Verification checks are
       put in a separate functions. GRUB_ERR_BUG is set for grub_error in
       cases of unexpected input variables for scale functions.
       * docs/grub.texi: Updated documentation for new options.
This commit is contained in:
Vladimir Testov 2013-10-02 18:17:33 +04:00
parent c573914389
commit ebc1da55cd
7 changed files with 417 additions and 107 deletions
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23
docs/grub.texi
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@ -1907,7 +1907,28 @@ In this example, name3 is assigned a color value.
@item message-font @tab Defines the font used for messages, such as when GRUB is unable to automatically boot an entry.
@item message-color @tab Defines the color of the message text.
@item message-bg-color @tab Defines the background color of the message text area.
@item desktop-image @tab Specifies the image to use as the background. It will be scaled to fit the screen size.
@item desktop-image
@tab Specifies the image to use as the background. It will be scaled
to fit the screen size or proportionally scaled depending on the scale
method.
@item desktop-image-scale-method
@tab Specifies the scaling method for the *desktop-image*. Options are
``stretch``, ``crop``, ``padding``, ``fitwidth``, ``fitheight``.
``stretch`` for fitting the screen size. Otherwise it is proportional
scaling of a part of *desktop-image* to the part of the screen.
``crop`` part of the *desktop-image* will be proportionally scaled to
fit the screen sizes. ``padding`` the entire *desktop-image* will be
contained on the screen. ``fitwidth`` for fitting the *desktop-image*'s
width with screen width. ``fitheight`` for fitting the *desktop-image*'s
height with the screen height. Default is ``stretch``.
@item desktop-image-h-align
@tab Specifies the horizontal alignment of the *desktop-image* if
*desktop-image-scale-method* isn't equeal to ``stretch``. Options are
``left``, ``center``, ``right``. Default is ``center``.
@item desktop-image-v-align
@tab Specifies the vertical alignment of the *desktop-image* if
*desktop-image-scale-method* isn't equeal to ``stretch``. Options are
``top``, ``center``, ``bottom``. Default is ``center``.
@item desktop-color @tab Specifies the color for the background if *desktop-image* is not specified.
@item terminal-box @tab Specifies the file name pattern for the styled box slices used for the command line terminal window. For example, ``terminal-box: terminal_*.png'' will use the images ``terminal_c.png`` as the center area, ``terminal_n.png`` as the north (top) edge, ``terminal_nw.png`` as the northwest (upper left) corner, and so on. If the image for any slice is not found, it will simply be left empty.
@item terminal-border @tab Specifies the border width of the terminal window.