583596178f
2002-08-04 Havoc Pennington <hp@redhat.com> * src/theme.c (free_menu_ops): use MetaMenuIconType not button type for the size of the menu ops array (meta_theme_define_int_constant): return TRUE on success (how the heck did this ever work?) (meta_theme_define_float_constant): return TRUE on success (meta_frame_style_validate): allow the "positional" buttons to be omitted for now. * src/testgradient.c (render_multi): don't define N_COLORS twice * src/theme-viewer.c (run_theme_benchmark): don't define ITERATIONS twice * src/theme.c (button_rect): handle new button types (meta_button_type_to_string): update (meta_button_type_from_string): update * src/theme.h (enum): add button types for the 6 possible button positions. No way to reposition buttons still but this will allow themes to go ahead and support doing so.
246 lines
9.3 KiB
Plaintext
246 lines
9.3 KiB
Plaintext
Docs on the theme format
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Themes are in a simple XML-subset format.
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<?xml version="1.0"?>
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<metacity_theme>
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<!-- Only one info section is allowed -->
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<info>
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<name>Foo</name>
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<author>Foo P. Bar</author>
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<copyright>whoever, 2002</copyright>
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<date>Jan 31 2005</date>
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<description>A sentence about the theme.</description>
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</info>
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<!-- define a frame geometry to be referenced later -->
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<!-- frame_geometry has an optional has_title attribute which
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determines whether the title text height is included in the
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height calculation. if not specified, defaults to true.
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It also has an optional text_size="medium" attribute
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(same sizes as with Pango markup, xx-small thru medium thru
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xx-large)
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Finally it has optional args rounded_top_left=true,
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rounded_top_right=true, rounded_bottom_left=true,
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rounded_bottom_right=true.
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-->
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<frame_geometry name="normal" has_title="true" title_size="medium">
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<distance name="left_width" value="6"/>
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<distance name="right_width" value="6"/>
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<distance name="bottom_height" value="7"/>
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<distance name="left_titlebar_edge" value="6"/>
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<distance name="right_titlebar_edge" value="6"/>
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<distance name="button_width" value="17"/>
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<distance name="button_height" value="17"/>
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<!-- alternative to button_width button_height distances -->
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<aspect_ratio name="button" value="1.0"/>
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<distance name="title_vertical_pad" value="4"/>
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<border name="title_border" left="3" right="12" top="4" bottom="3"/>
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<border name="button_border" left="0" right="0" top="1" bottom="1"/>
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</frame_geometry>
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<!-- inheritance is allowed; simply overwrites values from parent -->
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<frame_geometry name="borderless" parent="normal">
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<distance name="left_width" value="0"/>
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<distance name="right_width" value="0"/>
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<distance name="bottom_height" value="0"/>
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<distance name="left_titlebar_edge" value="0"/>
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<distance name="right_titlebar_edge" value="0"/>
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</frame_geometry>
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<!-- define a constant to use in positions/sizes of draw operations;
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constant names must start with a capital letter.
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-->
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<constant name="LineOffset" value="3"/>
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<!-- define drawing operations to be referenced later;
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these draw-op lists can also be placed inline.
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Positions/lengths are given as expressions.
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Operators are: +,-,*,/,%,`max`,`min`
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All operators are infix including `max` and `min`,
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i.e. "2 `max` 5"
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Some variables are predefined, and constants can also
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be used. Variables are:
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width - width of target area
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height - height of target area
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object_width - natural width of object being drawn
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object_height - natural height of object being drawn
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left_width - distance from left of frame to client window
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right_width - distance from right of frame to client window
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top_height - distance from top of frame to client window
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bottom_height - distance from bottom of frame to client window
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mini_icon_width - width of mini icon for window
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mini_icon_height - height of mini icon
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icon_width - width of large icon
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icon_height - height of large icon
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title_width - width of title text
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title_height - height of title text
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All these are always defined, except object_width/object_height
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which only exists for <image> right now.
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-->
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<draw_ops name="demo_all_ops">
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<line color="#00FF00" x1="LineOffset" y1="0" x2="0" y2="height"/>
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<line color="gtk:fg[NORMAL]"
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x1="width - 1" y1="0" x2="width - 1" y2="height"
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width="3" dash_on_length="2" dash_off_length="3"/>
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<rectangle color="blend/gtk:fg[NORMAL]/gtk:bg[NORMAL]/0.7"
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x="0" y="0" width="width - 1" height="height - 1" filled="true"/>
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<arc x="0" y="0" width="width - 1" height="height - 1"
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filled="false" start_angle="30" extent_angle="180"/>
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<tint color="orange" alpha="0.5" x1="0" y1="0" x2="0" y2="height"/>
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<!-- may be vertical, horizontal, diagonal -->
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<gradient type="diagonal"
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x="10" y="30" width="width / 3" height="height / 4">
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<!-- any number of colors allowed here. A color can be
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a color name like "blue" (look at gcolorsel), a hex color
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as in HTML (#FFBB99), or a color from the gtk theme
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given as "gtk:base[NORMAL]", "gtk:fg[ACTIVE]", etc.
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-->
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<color value="gtk:fg[SELECTED]"/>
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<!-- color obtained by a 0.5 alpha composite of the second color onto the first -->
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<color value="blend/gtk:bg[SELECTED]/gtk:fg[SELECTED]/0.5"/>
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</gradient>
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<!-- image has an optional colorize="#color" attribute to give the
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image a certain color -->
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<image filename="foo.png" alpha="0.7"
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x="10" y="30" width="width / 3" height="height / 4"/>
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<gtk_arrow state="normal" shadow="in" arrow="up"
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filled="true"
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x="2" y="2" width="width - 4" height="height - 4"/>
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<gtk_box state="normal" shadow="out"
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x="2" y="2" width="width - 4" height="height - 4"/>
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<gtk_vline state="normal" x="2" y1="0" y2="height"/>
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<!-- window's icon -->
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<icon alpha="0.7"
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x="10" y="30" width="width / 3" height="height / 4"/>
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<!-- window's title -->
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<title color="gtk:text[NORMAL]" x="20" y="30"/>
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<!-- include another draw ops list; has optional x/y/width/height attrs -->
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<include name="some_other_draw_ops"/>
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<!-- tile another draw ops list; has optional
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x/y/width/height/tile_xoffset/tile_yoffset -->
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<tile name="some_other_draw_ops" tile_width="10" tile_height="10"/>
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</draw_ops>
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<frame_style name="normal" geometry="normal">
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<!-- How to draw each piece of the frame.
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For each piece, a draw_ops can be given inline or referenced
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by name. If a piece is omitted, then nothing will be drawn
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for that piece.
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For each piece, the "width" and "height" variables in
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coordinate expressions refers to the dimensions of the piece,
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the origin is at the top left of the piece.
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So <rectangle x="0" y="0" width="width-1" height="height-1"/>
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will outline a piece.
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-->
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<piece position="entire_background" draw_ops="demo_all_ops"/>
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<piece position="left_titlebar_edge">
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<draw_ops>
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<line color="#00FF00" x1="0" y1="0" x2="0" y2="height"/>
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</draw_ops>
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</piece>
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<!-- The complete list of frame pieces:
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entire_background: whole frame
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titlebar: entire area above the app's window
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titlebar_middle: area of titlebar_background not considered
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part of an edge
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left_titlebar_edge: left side of titlebar background
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right_titlebar_edge: right side of titlebar background
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top_titlebar_edge: top side of titlebar background
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bottom_titlebar_edge: bottom side of titlebar background
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title: the title area (doesn't include buttons)
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left_edge: left edge of the frame
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right_edge: right edge of the frame
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bottom_edge: bottom edge of the frame
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overlay: same area as entire_background, but drawn after
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drawing all sub-pieces instead of before
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-->
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<!-- For buttons, drawing methods have to be provided for
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each of three states:
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normal, pressed, prelight
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and the button function or position must be provided:
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close, maximize, minimize, menu,
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left_left_background, left_middle_background,
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left_right_background, right_left_background,
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right_middle_background, right_right_background
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So a working theme needs 3*4 = 12 button declarations
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and a theme may have up to 3*10 = 30 button declarations
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in order to handle button-rearrangement preferences.
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(The name "function" for the attribute is from before the
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background values existed.)
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-->
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<button function="close" state="normal" draw_ops="previously_named"/>
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<button function="menu" state="normal">
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<draw_ops>
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<icon alpha="0.7"
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x="0" y="0" width="object_width" height="object_height"/>
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</draw_ops>
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</button>
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</frame_style>
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<!-- styles can inherit from each other with the parent="" attribute.
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In a subclass anything can be re-specified to override
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the parent style. -->
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<frame_style name="focused" parent="normal">
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<piece position="title">
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<draw_ops>
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<rectangle color="gtk:bg[SELECTED]"
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x="0" y="0" width="width-1" height="height-1"/>
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<title color="gtk:fg[SELECTED]" x="(width - title_width) / 2"
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y="(height - title_height) / 2"/>
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</draw_ops>
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</piece>
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</frame_style>
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<!-- Maps styles to states of frame.
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Focus: yes (focused), no (not focused)
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Window states: normal, maximized, shaded, maximized_and_shaded
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Window resizability: none, vertical, horizontal, both
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Everything unspecified just does the same as
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unfocused/normal/both.
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only state="normal" needs a resize="" attribute.
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-->
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<frame_style_set name="normal">
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<frame focus="yes" state="normal" resize="both" style="focused"/>
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<frame focus="no" state="normal" resize="both" style="normal"/>
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</frame_style_set>
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<!-- Each window type needs a style set
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Types: normal, dialog, modal_dialog, menu, utility, border
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-->
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<window type="normal" style_set="normal"/>
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<!-- For menu icons, drawing methods are needed for the same
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four types as the buttons, and GTK states
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(insensitive,prelight,normal,etc.)
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-->
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<menu_icon function="close" state="normal" draw_ops="previously_named"/>
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</metacity_theme>
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