weston/shared/frame.c
Jasper St. Pierre 7407345446 xdg-shell: Add set_margin request
This is used to figure out the size of "invisible" decorations, which we'll
use to better know the visible extents of the surface, which we can use for
constraining, titlebars, and more.
2014-02-06 13:05:03 -08:00

863 lines
19 KiB
C

/*
* Copyright © 2008 Kristian Høgsberg
* Copyright © 2012-2013 Collabora, Ltd.
* Copyright © 2013 Jason Ekstrand
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <wayland-util.h>
#include <linux/input.h>
#include "cairo-util.h"
enum frame_button_flags {
FRAME_BUTTON_ALIGN_RIGHT = 0x1,
FRAME_BUTTON_DECORATED = 0x2,
FRAME_BUTTON_CLICK_DOWN = 0x4,
};
struct frame_button {
struct frame *frame;
struct wl_list link; /* buttons_list */
cairo_surface_t *icon;
enum frame_button_flags flags;
int hover_count;
int press_count;
struct {
int x, y;
int width, height;
} allocation;
enum frame_status status_effect;
};
struct frame_pointer_button {
struct wl_list link;
uint32_t button;
enum theme_location press_location;
struct frame_button *frame_button;
};
struct frame_pointer {
struct wl_list link;
void *data;
int x, y;
struct frame_button *hover_button;
struct wl_list down_buttons;
};
struct frame_touch {
struct wl_list link;
void *data;
int x, y;
struct frame_button *button;
};
struct frame {
int32_t width, height;
char *title;
uint32_t flags;
struct theme *theme;
struct {
int32_t x, y;
int32_t width, height;
} interior;
int shadow_margin;
int opaque_margin;
int geometry_dirty;
uint32_t status;
struct wl_list buttons;
struct wl_list pointers;
struct wl_list touches;
};
static struct frame_button *
frame_button_create(struct frame *frame, const char *icon,
enum frame_status status_effect,
enum frame_button_flags flags)
{
struct frame_button *button;
button = calloc(1, sizeof *button);
if (!button)
return NULL;
button->icon = cairo_image_surface_create_from_png(icon);
if (!button->icon) {
free(button);
return NULL;
}
button->frame = frame;
button->flags = flags;
button->status_effect = status_effect;
wl_list_insert(frame->buttons.prev, &button->link);
return button;
}
static void
frame_button_destroy(struct frame_button *button)
{
cairo_surface_destroy(button->icon);
free(button);
}
static void
frame_button_enter(struct frame_button *button)
{
if (!button->hover_count)
button->frame->status |= FRAME_STATUS_REPAINT;
button->hover_count++;
}
static void
frame_button_leave(struct frame_button *button, struct frame_pointer *pointer)
{
button->hover_count--;
if (!button->hover_count)
button->frame->status |= FRAME_STATUS_REPAINT;
}
static void
frame_button_press(struct frame_button *button)
{
if (!button->press_count)
button->frame->status |= FRAME_STATUS_REPAINT;
button->press_count++;
if (button->flags & FRAME_BUTTON_CLICK_DOWN)
button->frame->status |= button->status_effect;
}
static void
frame_button_release(struct frame_button *button)
{
button->press_count--;
if (button->press_count)
return;
button->frame->status |= FRAME_STATUS_REPAINT;
if (!(button->flags & FRAME_BUTTON_CLICK_DOWN))
button->frame->status |= button->status_effect;
}
static void
frame_button_cancel(struct frame_button *button)
{
button->press_count--;
if (!button->press_count)
button->frame->status |= FRAME_STATUS_REPAINT;
}
static void
frame_button_repaint(struct frame_button *button, cairo_t *cr)
{
int x, y;
if (!button->allocation.width)
return;
if (!button->allocation.height)
return;
x = button->allocation.x;
y = button->allocation.y;
cairo_save(cr);
if (button->flags & FRAME_BUTTON_DECORATED) {
cairo_set_line_width(cr, 1);
cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
cairo_rectangle(cr, x, y, 25, 16);
cairo_stroke_preserve(cr);
if (button->press_count) {
cairo_set_source_rgb(cr, 0.7, 0.7, 0.7);
} else if (button->hover_count) {
cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
} else {
cairo_set_source_rgb(cr, 0.88, 0.88, 0.88);
}
cairo_fill (cr);
x += 4;
}
cairo_set_source_surface(cr, button->icon, x, y);
cairo_paint(cr);
cairo_restore(cr);
}
static struct frame_pointer *
frame_pointer_get(struct frame *frame, void *data)
{
struct frame_pointer *pointer;
wl_list_for_each(pointer, &frame->pointers, link)
if (pointer->data == data)
return pointer;
pointer = calloc(1, sizeof *pointer);
if (!pointer)
return NULL;
pointer->data = data;
wl_list_init(&pointer->down_buttons);
wl_list_insert(&frame->pointers, &pointer->link);
return pointer;
}
static void
frame_pointer_destroy(struct frame_pointer *pointer)
{
wl_list_remove(&pointer->link);
free(pointer);
}
static struct frame_touch *
frame_touch_get(struct frame *frame, void *data)
{
struct frame_touch *touch;
wl_list_for_each(touch, &frame->touches, link)
if (touch->data == data)
return touch;
touch = calloc(1, sizeof *touch);
if (!touch)
return NULL;
touch->data = data;
wl_list_insert(&frame->touches, &touch->link);
return touch;
}
static void
frame_touch_destroy(struct frame_touch *touch)
{
wl_list_remove(&touch->link);
free(touch);
}
void
frame_destroy(struct frame *frame)
{
struct frame_button *button, *next;
struct frame_touch *touch, *next_touch;
struct frame_pointer *pointer, *next_pointer;
wl_list_for_each_safe(button, next, &frame->buttons, link)
frame_button_destroy(button);
wl_list_for_each_safe(touch, next_touch, &frame->touches, link)
frame_touch_destroy(touch);
wl_list_for_each_safe(pointer, next_pointer, &frame->pointers, link)
frame_pointer_destroy(pointer);
free(frame->title);
free(frame);
}
struct frame *
frame_create(struct theme *t, int32_t width, int32_t height, uint32_t buttons,
const char *title)
{
struct frame *frame;
struct frame_button *button;
frame = calloc(1, sizeof *frame);
if (!frame)
return NULL;
frame->width = width;
frame->height = height;
frame->flags = 0;
frame->theme = t;
frame->status = FRAME_STATUS_REPAINT;
frame->geometry_dirty = 1;
wl_list_init(&frame->buttons);
wl_list_init(&frame->pointers);
wl_list_init(&frame->touches);
if (title) {
frame->title = strdup(title);
if (!frame->title)
goto free_frame;
}
if (title) {
button = frame_button_create(frame,
DATADIR "/weston/icon_window.png",
FRAME_STATUS_MENU,
FRAME_BUTTON_CLICK_DOWN);
if (!button)
goto free_frame;
}
if (buttons & FRAME_BUTTON_CLOSE) {
button = frame_button_create(frame,
DATADIR "/weston/sign_close.png",
FRAME_STATUS_CLOSE,
FRAME_BUTTON_ALIGN_RIGHT |
FRAME_BUTTON_DECORATED);
if (!button)
goto free_frame;
}
if (buttons & FRAME_BUTTON_MAXIMIZE) {
button = frame_button_create(frame,
DATADIR "/weston/sign_maximize.png",
FRAME_STATUS_MAXIMIZE,
FRAME_BUTTON_ALIGN_RIGHT |
FRAME_BUTTON_DECORATED);
if (!button)
goto free_frame;
}
if (buttons & FRAME_BUTTON_MINIMIZE) {
button = frame_button_create(frame,
DATADIR "/weston/sign_minimize.png",
FRAME_STATUS_MINIMIZE,
FRAME_BUTTON_ALIGN_RIGHT |
FRAME_BUTTON_DECORATED);
if (!button)
goto free_frame;
}
return frame;
free_frame:
frame_destroy(frame);
return NULL;
}
int
frame_set_title(struct frame *frame, const char *title)
{
char *dup = NULL;
if (title) {
dup = strdup(title);
if (!dup)
return -1;
}
free(frame->title);
frame->title = dup;
frame->status |= FRAME_STATUS_REPAINT;
return 0;
}
void
frame_set_flag(struct frame *frame, enum frame_flag flag)
{
if (flag & FRAME_FLAG_MAXIMIZED && !(frame->flags & FRAME_FLAG_MAXIMIZED))
frame->geometry_dirty = 1;
frame->flags |= flag;
frame->status |= FRAME_STATUS_REPAINT;
}
void
frame_unset_flag(struct frame *frame, enum frame_flag flag)
{
if (flag & FRAME_FLAG_MAXIMIZED && frame->flags & FRAME_FLAG_MAXIMIZED)
frame->geometry_dirty = 1;
frame->flags &= ~flag;
frame->status |= FRAME_STATUS_REPAINT;
}
void
frame_resize(struct frame *frame, int32_t width, int32_t height)
{
frame->width = width;
frame->height = height;
frame->geometry_dirty = 1;
frame->status |= FRAME_STATUS_REPAINT;
}
void
frame_resize_inside(struct frame *frame, int32_t width, int32_t height)
{
struct theme *t = frame->theme;
int decoration_width, decoration_height, titlebar_height;
if (frame->title)
titlebar_height = t->titlebar_height;
else
titlebar_height = t->width;
if (frame->flags & FRAME_FLAG_MAXIMIZED) {
decoration_width = t->width * 2;
decoration_height = t->width + titlebar_height;
} else {
decoration_width = (t->width + t->margin) * 2;
decoration_height = t->width +
titlebar_height + t->margin * 2;
}
frame_resize(frame, width + decoration_width,
height + decoration_height);
}
int32_t
frame_width(struct frame *frame)
{
return frame->width;
}
int32_t
frame_height(struct frame *frame)
{
return frame->height;
}
static void
frame_refresh_geometry(struct frame *frame)
{
struct frame_button *button;
struct theme *t = frame->theme;
int x_l, x_r, y, w, h, titlebar_height;
int32_t decoration_width, decoration_height;
if (!frame->geometry_dirty)
return;
if (frame->title)
titlebar_height = t->titlebar_height;
else
titlebar_height = t->width;
if (frame->flags & FRAME_FLAG_MAXIMIZED) {
decoration_width = t->width * 2;
decoration_height = t->width + titlebar_height;
frame->interior.x = t->width;
frame->interior.y = titlebar_height;
frame->interior.width = frame->width - decoration_width;
frame->interior.height = frame->height - decoration_height;
frame->opaque_margin = 0;
frame->shadow_margin = 0;
} else {
decoration_width = (t->width + t->margin) * 2;
decoration_height = t->width + titlebar_height + t->margin * 2;
frame->interior.x = t->width + t->margin;
frame->interior.y = titlebar_height + t->margin;
frame->interior.width = frame->width - decoration_width;
frame->interior.height = frame->height - decoration_height;
frame->opaque_margin = t->margin + t->frame_radius;
frame->shadow_margin = t->margin;
}
x_r = frame->width - t->width - frame->shadow_margin;
x_l = t->width + frame->shadow_margin;
y = t->width + frame->shadow_margin;
wl_list_for_each(button, &frame->buttons, link) {
const int button_padding = 4;
w = cairo_image_surface_get_width(button->icon);
h = cairo_image_surface_get_height(button->icon);
if (button->flags & FRAME_BUTTON_DECORATED)
w += 10;
if (button->flags & FRAME_BUTTON_ALIGN_RIGHT) {
x_r -= w;
button->allocation.x = x_r;
button->allocation.y = y;
button->allocation.width = w + 1;
button->allocation.height = h + 1;
x_r -= button_padding;
} else {
button->allocation.x = x_l;
button->allocation.y = y;
button->allocation.width = w + 1;
button->allocation.height = h + 1;
x_l += w;
x_l += button_padding;
}
}
frame->geometry_dirty = 0;
}
void
frame_interior(struct frame *frame, int32_t *x, int32_t *y,
int32_t *width, int32_t *height)
{
frame_refresh_geometry(frame);
if (x)
*x = frame->interior.x;
if (y)
*y = frame->interior.y;
if (width)
*width = frame->interior.width;
if (height)
*height = frame->interior.height;
}
void
frame_input_rect(struct frame *frame, int32_t *x, int32_t *y,
int32_t *width, int32_t *height)
{
frame_refresh_geometry(frame);
if (x)
*x = frame->shadow_margin;
if (y)
*y = frame->shadow_margin;
if (width)
*width = frame->width - frame->shadow_margin * 2;
if (height)
*height = frame->height - frame->shadow_margin * 2;
}
void
frame_opaque_rect(struct frame *frame, int32_t *x, int32_t *y,
int32_t *width, int32_t *height)
{
frame_refresh_geometry(frame);
if (x)
*x = frame->opaque_margin;
if (y)
*y = frame->opaque_margin;
if (width)
*width = frame->width - frame->opaque_margin * 2;
if (height)
*height = frame->height - frame->opaque_margin * 2;
}
int
frame_get_shadow_margin(struct frame *frame)
{
frame_refresh_geometry(frame);
return frame->shadow_margin;
}
uint32_t
frame_status(struct frame *frame)
{
return frame->status;
}
void
frame_status_clear(struct frame *frame, enum frame_status status)
{
frame->status &= ~status;
}
static struct frame_button *
frame_find_button(struct frame *frame, int x, int y)
{
struct frame_button *button;
int rel_x, rel_y;
wl_list_for_each(button, &frame->buttons, link) {
rel_x = x - button->allocation.x;
rel_y = y - button->allocation.y;
if (0 <= rel_x && rel_x < button->allocation.width &&
0 <= rel_y && rel_y < button->allocation.height)
return button;
}
return NULL;
}
enum theme_location
frame_pointer_enter(struct frame *frame, void *data, int x, int y)
{
return frame_pointer_motion(frame, data, x, y);
}
enum theme_location
frame_pointer_motion(struct frame *frame, void *data, int x, int y)
{
struct frame_pointer *pointer = frame_pointer_get(frame, data);
struct frame_button *button = frame_find_button(frame, x, y);
enum theme_location location;
location = theme_get_location(frame->theme, x, y,
frame->width, frame->height,
frame->flags & FRAME_FLAG_MAXIMIZED ?
THEME_FRAME_MAXIMIZED : 0);
if (!pointer)
return location;
pointer->x = x;
pointer->y = y;
if (pointer->hover_button == button)
return location;
if (pointer->hover_button)
frame_button_leave(pointer->hover_button, pointer);
pointer->hover_button = button;
if (pointer->hover_button)
frame_button_enter(pointer->hover_button);
return location;
}
static void
frame_pointer_button_destroy(struct frame_pointer_button *button)
{
wl_list_remove(&button->link);
free(button);
}
static void
frame_pointer_button_press(struct frame *frame, struct frame_pointer *pointer,
struct frame_pointer_button *button)
{
if (button->button == BTN_RIGHT) {
if (button->press_location == THEME_LOCATION_TITLEBAR)
frame->status |= FRAME_STATUS_MENU;
frame_pointer_button_destroy(button);
} else if (button->button == BTN_LEFT) {
if (pointer->hover_button) {
frame_button_press(pointer->hover_button);
} else {
switch (button->press_location) {
case THEME_LOCATION_TITLEBAR:
frame->status |= FRAME_STATUS_MOVE;
frame_pointer_button_destroy(button);
break;
case THEME_LOCATION_RESIZING_TOP:
case THEME_LOCATION_RESIZING_BOTTOM:
case THEME_LOCATION_RESIZING_LEFT:
case THEME_LOCATION_RESIZING_RIGHT:
case THEME_LOCATION_RESIZING_TOP_LEFT:
case THEME_LOCATION_RESIZING_TOP_RIGHT:
case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
frame->status |= FRAME_STATUS_RESIZE;
frame_pointer_button_destroy(button);
break;
default:
break;
}
}
}
}
static void
frame_pointer_button_release(struct frame *frame, struct frame_pointer *pointer,
struct frame_pointer_button *button)
{
if (button->button == BTN_LEFT && button->frame_button) {
if (button->frame_button == pointer->hover_button)
frame_button_release(button->frame_button);
else
frame_button_cancel(button->frame_button);
}
}
static void
frame_pointer_button_cancel(struct frame *frame, struct frame_pointer *pointer,
struct frame_pointer_button *button)
{
if (button->frame_button)
frame_button_cancel(button->frame_button);
}
void
frame_pointer_leave(struct frame *frame, void *data)
{
struct frame_pointer *pointer = frame_pointer_get(frame, data);
struct frame_pointer_button *button, *next;
if (!pointer)
return;
if (pointer->hover_button)
frame_button_leave(pointer->hover_button, pointer);
wl_list_for_each_safe(button, next, &pointer->down_buttons, link) {
frame_pointer_button_cancel(frame, pointer, button);
frame_pointer_button_destroy(button);
}
frame_pointer_destroy(pointer);
}
enum theme_location
frame_pointer_button(struct frame *frame, void *data,
uint32_t btn, enum frame_button_state state)
{
struct frame_pointer *pointer = frame_pointer_get(frame, data);
struct frame_pointer_button *button;
enum theme_location location = THEME_LOCATION_EXTERIOR;
if (!pointer)
return location;
location = theme_get_location(frame->theme, pointer->x, pointer->y,
frame->width, frame->height,
frame->flags & FRAME_FLAG_MAXIMIZED ?
THEME_FRAME_MAXIMIZED : 0);
if (state == FRAME_BUTTON_PRESSED) {
button = malloc(sizeof *button);
if (!button)
return location;
button->button = btn;
button->press_location = location;
button->frame_button = pointer->hover_button;
wl_list_insert(&pointer->down_buttons, &button->link);
frame_pointer_button_press(frame, pointer, button);
} else if (state == FRAME_BUTTON_RELEASED) {
button = NULL;
wl_list_for_each(button, &pointer->down_buttons, link)
if (button->button == btn)
break;
/* Make sure we didn't hit the end */
if (&button->link == &pointer->down_buttons)
return location;
location = button->press_location;
frame_pointer_button_release(frame, pointer, button);
frame_pointer_button_destroy(button);
}
return location;
}
void
frame_touch_down(struct frame *frame, void *data, int32_t id, int x, int y)
{
struct frame_touch *touch = frame_touch_get(frame, data);
struct frame_button *button = frame_find_button(frame, x, y);
enum theme_location location;
if (id > 0)
return;
if (touch && button) {
touch->button = button;
frame_button_press(touch->button);
return;
}
location = theme_get_location(frame->theme, x, y,
frame->width, frame->height,
frame->flags & FRAME_FLAG_MAXIMIZED ?
THEME_FRAME_MAXIMIZED : 0);
switch (location) {
case THEME_LOCATION_TITLEBAR:
frame->status |= FRAME_STATUS_MOVE;
break;
case THEME_LOCATION_RESIZING_TOP:
case THEME_LOCATION_RESIZING_BOTTOM:
case THEME_LOCATION_RESIZING_LEFT:
case THEME_LOCATION_RESIZING_RIGHT:
case THEME_LOCATION_RESIZING_TOP_LEFT:
case THEME_LOCATION_RESIZING_TOP_RIGHT:
case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
frame->status |= FRAME_STATUS_RESIZE;
break;
default:
break;
}
}
void
frame_touch_up(struct frame *frame, void *data, int32_t id)
{
struct frame_touch *touch = frame_touch_get(frame, data);
if (id > 0)
return;
if (touch && touch->button) {
frame_button_release(touch->button);
frame_touch_destroy(touch);
}
}
void
frame_repaint(struct frame *frame, cairo_t *cr)
{
struct frame_button *button;
uint32_t flags = 0;
frame_refresh_geometry(frame);
if (frame->flags & FRAME_FLAG_MAXIMIZED)
flags |= THEME_FRAME_MAXIMIZED;
if (frame->flags & FRAME_FLAG_ACTIVE)
flags |= THEME_FRAME_ACTIVE;
cairo_save(cr);
theme_render_frame(frame->theme, cr, frame->width, frame->height,
frame->title, flags);
cairo_restore(cr);
wl_list_for_each(button, &frame->buttons, link)
frame_button_repaint(button, cr);
frame_status_clear(frame, FRAME_STATUS_REPAINT);
}