titlebar_title.c File Reference

#include "titlebar_title.h"
#include <cairo.h>
#include <libbase/libbase.h>
#include <linux/input-event-codes.h>
#include <stdint.h>
#include <stdlib.h>
#include <wayland-server-core.h>
#include <wayland-server-protocol.h>
#include <wlr/interfaces/wlr_buffer.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_output_layout.h>
#include "buffer.h"
#include "gfxbuf.h"
#include "input.h"
#include "menu.h"
#include "primitives.h"
#include "style.h"
#include "test.h"
#include "tile.h"
#include "workspace.h"

Include dependency graph for titlebar_title.c:

Classes
struct	_wlmtk_titlebar_title_t

Functions
static void	_wlmtk_titlebar_title_element_destroy (wlmtk_element_t *element_ptr)
static bool	_wlmtk_titlebar_title_element_pointer_button (wlmtk_element_t *element_ptr, const wlmtk_button_event_t *button_event_ptr)
static bool	_wlmtk_titlebar_title_element_pointer_axis (wlmtk_element_t *element_ptr, struct wlr_pointer_axis_event *wlr_pointer_axis_event_ptr)
static void	title_set_activated (wlmtk_titlebar_title_t *titlebar_title_ptr, bool activated)
struct wlr_buffer *	title_create_buffer (bs_gfxbuf_t *gfxbuf_ptr, unsigned position, unsigned width, uint32_t text_color, const char *title_ptr, const struct wlmtk_titlebar_style *style_ptr)
wlmtk_titlebar_title_t *	wlmtk_titlebar_title_create (wlmtk_window_t *window_ptr)
void	wlmtk_titlebar_title_destroy (wlmtk_titlebar_title_t *titlebar_title_ptr)
bool	wlmtk_titlebar_title_redraw (wlmtk_titlebar_title_t *titlebar_title_ptr, bs_gfxbuf_t *focussed_gfxbuf_ptr, bs_gfxbuf_t *blurred_gfxbuf_ptr, int position, int width, bool activated, const char *title_ptr, const struct wlmtk_titlebar_style *style_ptr)
void	wlmtk_titlebar_title_set_activated (wlmtk_titlebar_title_t *titlebar_title_ptr, bool activated)
wlmtk_element_t *	wlmtk_titlebar_title_element (wlmtk_titlebar_title_t *titlebar_title_ptr)
static void	test_title (bs_test_t *test_ptr)
static void	test_shade (bs_test_t *test_ptr)

Variables
static const wlmtk_element_vmt_t	titlebar_title_element_vmt
static const bs_test_case_t	_wlmtk_titlebar_title_test_cases []
const bs_test_set_t	wlmtk_titlebar_title_test_set

Detailed Description

Copyright

Copyright (c) 2026 Philipp Kaeser (kaese.nosp@m.r@gu.nosp@m.bbe.c.nosp@m.h) Copyright 2023 Google LLC

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Function Documentation

_wlmtk_titlebar_title_element_destroy()

void _wlmtk_titlebar_title_element_destroy ( wlmtk_element_t *  element_ptr )

static

Dtor.

_wlmtk_titlebar_title_element_pointer_axis()

bool _wlmtk_titlebar_title_element_pointer_axis ( wlmtk_element_t *  element_ptr, struct wlr_pointer_axis_event *  wlr_pointer_axis_event_ptr  )

static

Handles pointer axis events: Scroll wheel up will shade, down will unshade.

Parameters

element_ptr
wlr_pointer_axis_event_ptr

Returns

true, if the axis event was consumed. That is the case if it's source is a scroll wheel, and the orientation is vertical.

_wlmtk_titlebar_title_element_pointer_button()

bool _wlmtk_titlebar_title_element_pointer_button ( wlmtk_element_t *  element_ptr, const wlmtk_button_event_t *  button_event_ptr  )

static

See wlmtk_element_vmt_t::pointer_button.

test_shade()

void test_shade ( bs_test_t *  test_ptr )

static

Tests that axis actions trigger 'shade'.

test_title()

void test_title ( bs_test_t *  test_ptr )

static

Tests title drawing.

title_create_buffer()

struct wlr_buffer * title_create_buffer	(	bs_gfxbuf_t *	gfxbuf_ptr,
		unsigned	position,
		unsigned	width,
		uint32_t	text_color,
		const char *	title_ptr,
		const struct wlmtk_titlebar_style *	style_ptr
	)

Creates a WLR buffer with the title's texture, as specified.

Parameters

gfxbuf_ptr
position
width
text_color
title_ptr
style_ptr

Returns

A pointer to a struct wlr_buffer with the texture.

title_set_activated()

void title_set_activated ( wlmtk_titlebar_title_t *  titlebar_title_ptr, bool  activated  )

static

Sets whether the title is drawn focussed (activated) or blurred.

Parameters

titlebar_title_ptr
activated

wlmtk_titlebar_title_create()

wlmtk_titlebar_title_t * wlmtk_titlebar_title_create

(

wlmtk_window_t *

window_ptr

)

Creates a title bar title.

Parameters

window_ptr

Returns

Title handle.

wlmtk_titlebar_title_destroy()

void wlmtk_titlebar_title_destroy

(

wlmtk_titlebar_title_t *

titlebar_title_ptr

)

Destroys the titlebar title.

Parameters

titlebar_title_ptr

wlmtk_titlebar_title_element()

wlmtk_element_t * wlmtk_titlebar_title_element

(

wlmtk_titlebar_title_t *

titlebar_title_ptr

)

Returns the superclass wlmtk_element_t for the titlebar title.

Parameters

titlebar_title_ptr

Returns

Pointer to the super element.

wlmtk_titlebar_title_redraw()

bool wlmtk_titlebar_title_redraw	(	wlmtk_titlebar_title_t *	titlebar_title_ptr,
		bs_gfxbuf_t *	focussed_gfxbuf_ptr,
		bs_gfxbuf_t *	blurred_gfxbuf_ptr,
		int	position,
		int	width,
		bool	activated,
		const char *	title_ptr,
		const struct wlmtk_titlebar_style *	style_ptr
	)

Redraws the title section of the title bar.

Parameters

titlebar_title_ptr
focussed_gfxbuf_ptr	Titlebar background when focussed.
blurred_gfxbuf_ptr	Titlebar background when blurred.
position	Position of title telative to titlebar.
width	Width of title.
activated	Whether the title bar should start focussed.
title_ptr	Title, or NULL.
style_ptr

Returns

true on success.

wlmtk_titlebar_title_set_activated()

void wlmtk_titlebar_title_set_activated	(	wlmtk_titlebar_title_t *	titlebar_title_ptr,
		bool	activated
	)

Sets activation status of the titlebar's title.

Parameters

titlebar_title_ptr
activated

Variable Documentation

_wlmtk_titlebar_title_test_cases

const bs_test_case_t _wlmtk_titlebar_title_test_cases[]

static

Initial value:

= {
    
    
    { 0, "title", test_title },
    { 1, "shade", test_shade },
 
}

Test cases

titlebar_title_element_vmt

const wlmtk_element_vmt_t titlebar_title_element_vmt

static

Initial value:

= {
    .destroy = _wlmtk_titlebar_title_element_destroy,
    .pointer_button = _wlmtk_titlebar_title_element_pointer_button,
    .pointer_axis = _wlmtk_titlebar_title_element_pointer_axis,
}

Extension to the superclass elment's virtual method table.

wlmtk_titlebar_title_test_set

const bs_test_set_t wlmtk_titlebar_title_test_set

Initial value:

= BS_TEST_SET(
    true, "titlebar_title", _wlmtk_titlebar_title_test_cases)

Unit test cases.