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theme: support basic vertical titlebar gradients

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Only Vertical and SplitVertical gradients are supported,
and only for window.*.title.bg.

Not supported at this time:

- horizontal or diagonal gradients
- gradients for window.*.label.bg, buttons, or menus
- any type of border (raised, sunken, etc.)
This commit is contained in:
John Lindgren 2025-04-22 12:24:06 -04:00
parent 990706b081
commit ec145a14ca
2 changed files with 159 additions and 9 deletions
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24
include/theme.h
View file

@ -14,6 +14,16 @@
struct lab_img;
/*
* Openbox defines 7 types of Gradient background in addition to Solid.
* Currently, labwc supports only Vertical and SplitVertical.
*/
enum lab_gradient {
LAB_GRADIENT_NONE, /* i.e. Solid */
LAB_GRADIENT_VERTICAL,
LAB_GRADIENT_SPLITVERTICAL,
};
enum lab_justification {
LAB_JUSTIFY_LEFT,
LAB_JUSTIFY_CENTER,
@ -38,6 +48,16 @@ enum lab_button_state {
LAB_BS_ALL = LAB_BS_HOVERD | LAB_BS_TOGGLED | LAB_BS_ROUNDED,
};
struct theme_background {
/* gradient type or none/solid */
enum lab_gradient gradient;
/* gradient stops */
float color[4];
float color_split_to[4];
float color_to[4];
float color_to_split_to[4];
};
struct theme {
int border_width;
@ -66,12 +86,14 @@ struct theme {
* THEME_INACTIVE and THEME_ACTIVE.
*/
struct {
/* title background pattern (solid or gradient) */
struct theme_background title_bg;
/* TODO: add toggled/hover/pressed/disabled colors for buttons */
float button_colors[LAB_SSD_BUTTON_LAST + 1][4];
float border_color[4];
float toggled_keybinds_color[4];
float title_bg_color[4];
float label_text_color[4];
/* window drop-shadows */