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sortix-mirror/display/window.c

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/*
* Copyright (c) 2014, 2015, 2016, 2017, 2022, 2023 Jonas 'Sortie' Termansen.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, 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.
*
* window.c
* Window abstraction.
*/
#include <assert.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <timespec.h>
#include <display-protocol.h>
#include "connection.h"
#include "display.h"
#include "framebuffer.h"
#include "pixel.h"
#include "vgafont.h"
#include "window.h"
struct framebuffer window_client_buffer(struct window* window)
{
if ( window->window_state != WINDOW_STATE_REGULAR )
return framebuffer_crop(window->buffer, 0, TITLE_HEIGHT,
window->width, window->height - TITLE_HEIGHT);
return framebuffer_crop(window->buffer, BORDER_WIDTH, TITLE_HEIGHT,
window->width - 2 * BORDER_WIDTH,
window->height - TITLE_HEIGHT - BORDER_WIDTH);
}
void window_schedule_redraw(struct window* window)
{
if ( window->show )
display_schedule_redraw(window->display);
}
void window_render_frame(struct window* window)
{
if ( !window->width || !window->height )
return;
bool has_focus = window->display->tab_candidate ?
window->display->tab_candidate == window :
window->display->active_window == window;
uint32_t glass_color = has_focus ? make_color_a(200, 200, 255, 192)
: make_color_a(180, 180, 255, 128);
uint32_t title_color = has_focus ? make_color_a(16, 16, 16, 240)
: make_color_a(32, 32, 32, 200);
uint32_t button_hover_glass = make_color_a(220, 220, 255, 255);
uint32_t button_press_glass = make_color_a(180, 180, 255, 255);
size_t start_x = 0;
size_t start_y = 0;
size_t end_x = window->width - 1;
size_t end_y = window->height - 1;
bool maximized = window->window_state != WINDOW_STATE_REGULAR;
int b0 = 0;
int b1 = 1;
int b2 = 2;
int b3 = BORDER_WIDTH;
int t0 = TITLE_HEIGHT;
for ( size_t y = start_y; y <= end_y; y++ )
{
for ( size_t x = start_x; x <= end_x; x++ )
{
uint32_t color;
if ( maximized && y < start_y + t0 )
color = glass_color;
else if ( maximized )
continue;
else if ( x == start_x + b0 || x == end_x - b0 ||
y == start_y + b0 || y == end_y - b0 )
color = make_color_a(0, 0, 0, 32);
else if ( x == start_x + b1 || x == end_x - b1 ||
y == start_y + b1 || y == end_y - b1 )
color = make_color_a(0, 0, 0, 64);
else if ( x == start_x + b2 || x == end_x - b2 ||
y == start_y + b2 || y == end_y - b2 )
color = make_color(240, 240, 250);
else if ( x < start_x + (b3-1) || x > end_x - (b3-1) ||
y < start_y + (t0-1) || y > end_y - (b3-1) )
color = glass_color;
else if ( x == start_x + (b3-1) || x == end_x - (b3-1) ||
y == start_y + (t0-1) || y == end_y - (b3-1) )
color = make_color(64, 64, 64);
else
continue;
framebuffer_set_pixel(window->buffer, x, y, color);
}
}
const char* tt = window->title ? window->title : "";
ssize_t tt_width = render_text_width(tt); // Potentially adjusted later.
size_t tt_height = FONT_HEIGHT;
size_t tt_pos_y = (TITLE_HEIGHT - FONT_HEIGHT) / 2 + 2;
uint32_t tt_color = title_color;
size_t border_width = maximized ? 0 : b2 + 1;
size_t button_area_height = maximized ? t0 : t0 - (b2 + 1);
size_t button_area_width = button_area_height;
size_t button_area_top = maximized ? 0 : b2;
size_t button_size = FONT_WIDTH - 1;
size_t button_top = (button_area_height - button_size + 1) / 2;
size_t button_left = (button_area_width - button_size + 1) / 2;
ssize_t buttons_x = window->width - border_width - button_area_width*3 + 1;
struct framebuffer buttons_fb =
framebuffer_crop(window->buffer, buttons_x, button_area_top,
button_area_width * 3, button_area_height);
for ( size_t n = 0; n < 3; n++ )
{
uint32_t color = glass_color;
switch ( window->button_states[n] )
{
case BUTTON_STATE_NORMAL: continue;
case BUTTON_STATE_HOVER: color = button_hover_glass; break;
case BUTTON_STATE_PRESSED: color = button_press_glass; break;
}
size_t bx = button_area_width * n;
size_t by = 0;
for ( size_t y = 0; y < button_area_height; y++ )
for ( size_t x = 0; x < button_area_width; x++ )
framebuffer_set_pixel(buttons_fb, bx + x, by + y, color);
}
for ( size_t i = 0; i < button_size; i++ )
{
size_t bx = button_area_width * 0 + button_left;
size_t by = button_top;
framebuffer_set_pixel(buttons_fb, bx + i,
by + button_size - 1, tt_color);
framebuffer_set_pixel(buttons_fb, bx + i,
by + button_size - 2, tt_color);
}
for ( size_t i = 0; i < button_size; i++ )
{
size_t bx = button_area_width * 1 + button_left;
size_t by = button_top;
framebuffer_set_pixel(buttons_fb, bx + i,
by, tt_color);
framebuffer_set_pixel(buttons_fb, bx + i,
by + button_size - 1 , tt_color);
framebuffer_set_pixel(buttons_fb, bx,
by + i, tt_color);
framebuffer_set_pixel(buttons_fb, bx + button_size - 1,
by + i, tt_color);
framebuffer_set_pixel(buttons_fb, bx + i,
by + 1, tt_color);
framebuffer_set_pixel(buttons_fb, bx + i,
by + button_size - 2 , tt_color);
framebuffer_set_pixel(buttons_fb, bx + 1,
by + i, tt_color);
framebuffer_set_pixel(buttons_fb, bx + button_size - 2,
by + i, tt_color);
}
for ( size_t i = 0; i < button_size; i++ )
{
size_t bx = button_area_width * 2 + button_left;
size_t by = button_top;
framebuffer_set_pixel(buttons_fb, bx + i,
by + i, tt_color);
framebuffer_set_pixel(buttons_fb, bx + i,
by + button_size - 1 - i, tt_color);
framebuffer_set_pixel(buttons_fb, bx + i - 1,
by + i, tt_color);
framebuffer_set_pixel(buttons_fb, bx + i - 1,
by + button_size - 1 - i, tt_color);
}
ssize_t q = 500 - window->width;
ssize_t q_width = 200;
q = q < q_width ? q : q_width;
q = 0 < q ? q : 0;
ssize_t center_over = window->width - (button_area_width * 3 * q / q_width);
ssize_t tt_pos_x = (center_over - tt_width) / 2;
if ( tt_pos_x < (ssize_t)border_width )
{
tt_pos_x = border_width;
tt_width = buttons_x - border_width;
tt_width = 0 < tt_width ? tt_width : 0;
}
render_text(framebuffer_crop(window->buffer, tt_pos_x, tt_pos_y,
tt_width, tt_height), tt, tt_color);
window_schedule_redraw(window);
}
void window_move(struct window* window, size_t left, size_t top)
{
window->left = left;
window->top = top;
window_schedule_redraw(window);
}
void window_client_resize(struct window* window,
size_t client_width,
size_t client_height)
{
if ( window->window_state != WINDOW_STATE_MINIMIZED )
window->window_state = WINDOW_STATE_REGULAR;
struct framebuffer old_fb = window->buffer;
window->width = client_width + BORDER_WIDTH + BORDER_WIDTH;
window->height = client_height + TITLE_HEIGHT + BORDER_WIDTH;
window->buffer.xres = window->width;
window->buffer.yres = window->height;
window->buffer.pitch = window->width;
// TODO: Check malloc.
window->buffer.buffer =
malloc(sizeof(uint32_t) * window->width * window->height);
for ( size_t y = 0; y < window->height; y++ )
for ( size_t x = 0; x < window->width; x++ )
framebuffer_set_pixel(window->buffer, x, y,
framebuffer_get_pixel(old_fb, x, y));
free(old_fb.buffer);
window_render_frame(window);
window_notify_client_resize(window);
window_schedule_redraw(window);
}
void window_resize(struct window* window, size_t width, size_t height)
{
if ( width < BORDER_WIDTH + BORDER_WIDTH )
width = BORDER_WIDTH + BORDER_WIDTH;
if ( height < TITLE_HEIGHT + BORDER_WIDTH )
height = TITLE_HEIGHT + BORDER_WIDTH;
// TODO: Keep proper track of this for each state.
size_t client_width = width - (BORDER_WIDTH + BORDER_WIDTH);
size_t client_height = height - (TITLE_HEIGHT + BORDER_WIDTH);
window_client_resize(window, client_width, client_height);
}
void window_drag_resize(struct window* window, int ld, int td, int wd, int hd)
{
// TODO: Keep proper track of this for each state.
size_t client_width = window->width - (BORDER_WIDTH + BORDER_WIDTH);
size_t client_height = window->height - (TITLE_HEIGHT + BORDER_WIDTH);
if ( ld || td )
window_move(window, window->left + ld, window->top + td);
if ( wd || hd )
{
ssize_t new_width = (ssize_t) client_width + wd;
ssize_t new_height = (ssize_t) client_height + hd;
if ( new_width < 1 )
new_width = 1;
if ( new_height < 1 )
new_height = 1;
window_client_resize(window, new_width, new_height);
}
}
static size_t next_window_position = 25;
void window_initialize(struct window* window,
struct connection* connection,
struct display* display,
uint32_t window_id)
{
memset(window, 0, sizeof(*window));
window->created = true;
window->connection = connection;
window->display = display;
window->title_click_time = timespec_make(-1, 0);
window->window_id = window_id;
display_add_window(window->display, window);
window->top = next_window_position;
window->left = next_window_position;
size_t max_position = display->screen_width < display->screen_height ?
display->screen_width : display->screen_height;
max_position = (max_position * 6) / 10;
next_window_position += 30;
next_window_position %= max_position;
window_client_resize(window, 0, 0);
}
void window_quit(struct window* window)
{
struct event_quit event;
event.window_id = window->window_id;
struct display_packet_header header;
header.id = EVENT_QUIT;
header.size = sizeof(event);
assert(window->connection);
connection_schedule_transmit(window->connection, &header, sizeof(header));
connection_schedule_transmit(window->connection, &event, sizeof(event));
}
void window_destroy(struct window* window)
{
display_remove_window(window->display, window);
free(window->buffer.buffer);
free(window->title);
memset(window, 0, sizeof(*window));
window->created = false;
}
void window_on_display_resolution_change(struct window* window,
struct display* display)
{
// TODO: Move window back inside screen.
if ( window->window_state == WINDOW_STATE_MAXIMIZED )
{
// TODO: Change size of maximized window.
(void) display;
}
}
void window_tile(struct window* window, enum window_state state, size_t left,
size_t top, size_t width, size_t height)
{
if ( window->window_state == state )
return;
if ( window->window_state == WINDOW_STATE_REGULAR )
{
window->saved_left = window->left;
window->saved_top = window->top;
window->saved_width = window->width;
window->saved_height = window->height;
}
free(window->buffer.buffer);
window->left = left;
window->top = top;
window->width = width;
window->height = height;
// TODO: Share logic with window_client_resize.
window->buffer.xres = window->width;
window->buffer.yres = window->height;
window->buffer.pitch = window->width;
// TODO: Check malloc.
window->buffer.buffer =
calloc(1, sizeof(uint32_t) * window->width * window->height);
window->window_state = state;
window_render_frame(window);
window_notify_client_resize(window);
}
void window_maximize(struct window* window)
{
window_tile(window, WINDOW_STATE_MAXIMIZED,
0, 0,
window->display->screen_width, window->display->screen_height);
}
void window_restore(struct window* window)
{
if ( window->window_state == WINDOW_STATE_REGULAR )
return;
window->top = window->saved_top;
window->left = window->saved_left;
window_client_resize(window, window->saved_width - 2 * BORDER_WIDTH,
window->saved_height - TITLE_HEIGHT - BORDER_WIDTH);
window_notify_client_resize(window);
}
void window_toggle_maximized(struct window* window)
{
if ( window->window_state == WINDOW_STATE_MAXIMIZED )
window_restore(window);
else
window_maximize(window);
}
void window_tile_leftward(struct window* window)
{
switch ( window->window_state )
{
case WINDOW_STATE_REGULAR: window_tile_left(window); break;
case WINDOW_STATE_MAXIMIZED: window_tile_left(window); break;
case WINDOW_STATE_MINIMIZED: window_tile_right(window); break;
case WINDOW_STATE_TILE_LEFT: break;
case WINDOW_STATE_TILE_RIGHT: window_restore(window); break;
case WINDOW_STATE_TILE_TOP: window_tile_top_left(window); break;
case WINDOW_STATE_TILE_TOP_LEFT: break;
case WINDOW_STATE_TILE_TOP_RIGHT: window_tile_top(window); break;
case WINDOW_STATE_TILE_BOTTOM: window_tile_bottom_left(window); break;
case WINDOW_STATE_TILE_BOTTOM_LEFT: break;
case WINDOW_STATE_TILE_BOTTOM_RIGHT: window_tile_bottom(window); break;
}
}
void window_tile_rightward(struct window* window)
{
switch ( window->window_state )
{
case WINDOW_STATE_REGULAR: window_tile_right(window); break;
case WINDOW_STATE_MAXIMIZED: window_tile_right(window); break;
case WINDOW_STATE_MINIMIZED: window_tile_right(window); break;
case WINDOW_STATE_TILE_LEFT: window_restore(window); break;
case WINDOW_STATE_TILE_RIGHT: break;
case WINDOW_STATE_TILE_TOP: window_tile_top_right(window); break;
case WINDOW_STATE_TILE_TOP_LEFT: window_tile_top(window); break;
case WINDOW_STATE_TILE_TOP_RIGHT: break;
case WINDOW_STATE_TILE_BOTTOM: window_tile_bottom_right(window); break;
case WINDOW_STATE_TILE_BOTTOM_LEFT: window_tile_bottom(window); break;
case WINDOW_STATE_TILE_BOTTOM_RIGHT: break;
}
}
void window_tile_up(struct window* window)
{
switch ( window->window_state )
{
case WINDOW_STATE_REGULAR: window_tile_top(window); break;
case WINDOW_STATE_MAXIMIZED: window_restore(window); break;
case WINDOW_STATE_MINIMIZED: window_tile_top(window); break;
case WINDOW_STATE_TILE_LEFT: window_tile_top_left(window); break;
case WINDOW_STATE_TILE_RIGHT: window_tile_top_right(window); break;
case WINDOW_STATE_TILE_TOP: window_maximize(window); break;
case WINDOW_STATE_TILE_TOP_LEFT: break;
case WINDOW_STATE_TILE_TOP_RIGHT: break;
case WINDOW_STATE_TILE_BOTTOM: window_restore(window); break;
case WINDOW_STATE_TILE_BOTTOM_LEFT: window_tile_left(window); break;
case WINDOW_STATE_TILE_BOTTOM_RIGHT: window_tile_right(window); break;
}
}
void window_tile_down(struct window* window)
{
switch ( window->window_state )
{
case WINDOW_STATE_REGULAR: window_tile_bottom(window); break;
case WINDOW_STATE_MAXIMIZED: window_tile_top(window); break;
case WINDOW_STATE_MINIMIZED: window_tile_bottom(window); break;
case WINDOW_STATE_TILE_LEFT: window_tile_bottom_left(window); break;
case WINDOW_STATE_TILE_RIGHT: window_tile_bottom_right(window); break;
case WINDOW_STATE_TILE_TOP: window_restore(window); break;
case WINDOW_STATE_TILE_TOP_LEFT: window_tile_left(window); break;
case WINDOW_STATE_TILE_TOP_RIGHT: window_tile_right(window); break;
case WINDOW_STATE_TILE_BOTTOM: break;
case WINDOW_STATE_TILE_BOTTOM_LEFT: break;
case WINDOW_STATE_TILE_BOTTOM_RIGHT: break;
}
}
void window_tile_left(struct window* window)
{
window_tile(window, WINDOW_STATE_TILE_LEFT,
0,
0,
window->display->screen_width / 2,
window->display->screen_height);
}
void window_tile_right(struct window* window)
{
window_tile(window, WINDOW_STATE_TILE_RIGHT,
(window->display->screen_width + 1) / 2,
0,
(window->display->screen_width + 1) / 2,
window->display->screen_height);
}
void window_tile_top(struct window* window)
{
window_tile(window, WINDOW_STATE_TILE_TOP,
0,
0,
window->display->screen_width,
window->display->screen_height / 2);
}
void window_tile_top_left(struct window* window)
{
window_tile(window, WINDOW_STATE_TILE_TOP_LEFT,
0,
0,
window->display->screen_width / 2,
window->display->screen_height / 2);
}
void window_tile_top_right(struct window* window)
{
window_tile(window, WINDOW_STATE_TILE_TOP_RIGHT,
(window->display->screen_width + 1) / 2,
0,
(window->display->screen_width + 1) / 2,
window->display->screen_height / 2);
}
void window_tile_bottom(struct window* window)
{
window_tile(window, WINDOW_STATE_TILE_BOTTOM,
0,
(window->display->screen_height + 1) / 2,
window->display->screen_width,
(window->display->screen_height + 1) / 2);
}
void window_tile_bottom_left(struct window* window)
{
window_tile(window, WINDOW_STATE_TILE_BOTTOM_LEFT,
0,
(window->display->screen_height + 1) / 2,
window->display->screen_width / 2,
(window->display->screen_height + 1) / 2);
}
void window_tile_bottom_right(struct window* window)
{
window_tile(window, WINDOW_STATE_TILE_BOTTOM_RIGHT,
(window->display->screen_width + 1) / 2,
(window->display->screen_height + 1) / 2,
(window->display->screen_width + 1) / 2,
(window->display->screen_height + 1) / 2);
}
void window_notify_client_resize(struct window* window)
{
struct event_resize event;
event.window_id = window->window_id;
event.width = window_client_buffer(window).xres;
event.height = window_client_buffer(window).yres;
struct display_packet_header header;
header.id = EVENT_RESIZE;
header.size = sizeof(event);
assert(window->connection);
connection_schedule_transmit(window->connection, &header, sizeof(header));
connection_schedule_transmit(window->connection, &event, sizeof(event));
}
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