256 lines
8.1 KiB
C
256 lines
8.1 KiB
C
/*
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* Copyright (c) 2014, 2015, 2016, 2017 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* window.c
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* Window abstraction.
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*/
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#include <assert.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <display-protocol.h>
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#include "connection.h"
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#include "display.h"
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#include "framebuffer.h"
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#include "pixel.h"
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#include "vgafont.h"
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#include "window.h"
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struct framebuffer window_client_buffer(struct window* window)
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{
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if ( window->window_state == WINDOW_STATE_MAXIMIZED )
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return framebuffer_crop(window->buffer, 0, TITLE_HEIGHT,
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window->width, window->height - TITLE_HEIGHT);
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return framebuffer_crop(window->buffer, BORDER_WIDTH, TITLE_HEIGHT,
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window->width - 2 * BORDER_WIDTH,
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window->height - TITLE_HEIGHT - BORDER_WIDTH);
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}
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void window_render_frame(struct window* window)
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{
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if ( !window->width || !window->height )
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return;
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bool has_focus = window->display->tab_candidate ?
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window->display->tab_candidate == window :
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window->display->active_window == window;
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uint32_t glass_color = has_focus ? make_color_a(200, 200, 255, 192)
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: make_color_a(180, 180, 255, 128);
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uint32_t title_color = has_focus ? make_color_a(16, 16, 16, 240)
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: make_color_a(32, 32, 32, 200);
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size_t start_x = 0;
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size_t start_y = 0;
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size_t end_x = window->width - 1;
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size_t end_y = window->height - 1;
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bool maximized = window->window_state == WINDOW_STATE_MAXIMIZED;
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int b0 = 0;
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int b1 = 1;
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int b2 = 2;
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int b3 = BORDER_WIDTH;
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int t0 = TITLE_HEIGHT;
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for ( size_t y = start_y; y <= end_y; y++ )
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{
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for ( size_t x = start_x; x <= end_x; x++ )
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{
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uint32_t color;
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if ( maximized && y <= start_y + t0 )
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color = glass_color;
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else if ( maximized )
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continue;
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else if ( x == start_x + b0 || x == end_x - b0 ||
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y == start_y + b0 || y == end_y - b0 )
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color = make_color_a(0, 0, 0, 32);
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else if ( x == start_x + b1 || x == end_x - b1 ||
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y == start_y + b1 || y == end_y - b1 )
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color = make_color_a(0, 0, 0, 64);
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else if ( x == start_x + b2 || x == end_x - b2 ||
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y == start_y + b2 ||+ y == end_y - b2 )
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color = make_color(240, 240, 250);
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else if ( x < start_x + (b3-1) || x > end_x - (b3-1) ||
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y < start_y + (t0-1) || y > end_y - (b3-1) )
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color = glass_color;
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else if ( x == start_x + (b3-1) || x == end_x - (b3-1) ||
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y == start_y + (t0-1) || y == end_y - (b3-1) )
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color = make_color(64, 64, 64);
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else
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continue;
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framebuffer_set_pixel(window->buffer, x, y, color);
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}
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}
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const char* tt = window->title ? window->title : "";
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size_t tt_max_width = window->width - 2 * BORDER_WIDTH;
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size_t tt_desired_width = render_text_width(tt);
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size_t tt_width = tt_desired_width < tt_max_width ? tt_desired_width : tt_max_width;
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size_t tt_height = FONT_HEIGHT;
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size_t tt_pos_x = BORDER_WIDTH + (tt_max_width - tt_width) / 2;
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size_t tt_pos_y = (TITLE_HEIGHT - FONT_HEIGHT) / 2 + 2;
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uint32_t tt_color = title_color;
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render_text(framebuffer_crop(window->buffer, tt_pos_x, tt_pos_y, tt_width, tt_height), tt, tt_color);
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}
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void window_move(struct window* window, size_t left, size_t top)
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{
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window->left = left;
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window->top = top;
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}
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void window_client_resize(struct window* window,
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size_t client_width,
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size_t client_height)
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{
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if ( window->window_state == WINDOW_STATE_MAXIMIZED )
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window->window_state = WINDOW_STATE_REGULAR;
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free(window->buffer.buffer);
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window->width = client_width + BORDER_WIDTH + BORDER_WIDTH;
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window->height = client_height + TITLE_HEIGHT + BORDER_WIDTH;
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window->buffer.xres = window->width;
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window->buffer.yres = window->height;
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window->buffer.pitch = window->width;
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window->buffer.buffer = (uint32_t*)
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malloc(sizeof(uint32_t) * window->width * window->height);
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memset(window->buffer.buffer, 0, sizeof(uint32_t) * window->width * window->height);
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window_render_frame(window);
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window_notify_client_resize(window);
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}
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void window_resize(struct window* window, size_t width, size_t height)
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{
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if ( width < BORDER_WIDTH + BORDER_WIDTH )
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width = BORDER_WIDTH + BORDER_WIDTH;
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if ( height < TITLE_HEIGHT + BORDER_WIDTH )
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height = TITLE_HEIGHT + BORDER_WIDTH;
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size_t client_width = width - (BORDER_WIDTH + BORDER_WIDTH);
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size_t client_height = height - (TITLE_HEIGHT + BORDER_WIDTH);
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window_client_resize(window, client_width, client_height);
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}
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static size_t next_window_position = 25;
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void window_initialize(struct window* window,
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struct connection* connection,
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struct display* display,
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uint32_t window_id)
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{
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memset(window, 0, sizeof(*window));
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window->created = true;
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window->connection = connection;
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window->display = display;
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window->title = NULL;
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window->window_id = window_id;
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display_add_window(window->display, window);
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window->top = next_window_position;
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window->left = next_window_position;
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next_window_position += 30;
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window_client_resize(window, 0, 0);
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}
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void window_destroy(struct window* window)
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{
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display_remove_window(window->display, window);
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free(window->buffer.buffer);
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free(window->title);
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memset(window, 0, sizeof(*window));
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window->created = false;
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}
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void window_on_display_resolution_change(struct window* window, struct display* display)
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{
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// TODO: Potentially move window back inside screen?
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if ( window->window_state == WINDOW_STATE_MAXIMIZED )
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{
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// TODO: Change size of maximized window.
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(void) display;
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}
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}
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void window_maximize(struct window* window)
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{
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if ( window->window_state == WINDOW_STATE_MAXIMIZED )
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return;
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window->saved_left = window->left;
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window->saved_top = window->top;
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window->saved_width = window->width;
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window->saved_height = window->height;
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free(window->buffer.buffer);
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window->top = 0;
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window->left = 0;
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window->width = window->display->screen_width;
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window->height = window->display->screen_height;
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window->buffer.xres = window->width;
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window->buffer.yres = window->height;
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window->buffer.pitch = window->width;
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window->buffer.buffer = (uint32_t*)
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malloc(sizeof(uint32_t) * window->width * window->height);
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memset(window->buffer.buffer, 0, sizeof(uint32_t) * window->width * window->height);
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window->window_state = WINDOW_STATE_MAXIMIZED;
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window_render_frame(window);
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window_notify_client_resize(window);
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}
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void window_restore(struct window* window)
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{
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if ( window->window_state != WINDOW_STATE_MAXIMIZED )
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return;
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window->top = window->saved_top;
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window->left = window->saved_left;
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window_client_resize(window, window->saved_width - 2 * BORDER_WIDTH, window->saved_height - TITLE_HEIGHT - BORDER_WIDTH);
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window_notify_client_resize(window);
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}
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void window_toggle_maximized(struct window* window)
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{
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if ( window->window_state == WINDOW_STATE_MAXIMIZED )
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window_restore(window);
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else
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window_maximize(window);
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}
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void window_notify_client_resize(struct window* window)
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{
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struct event_resize event;
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event.window_id = window->window_id;
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event.width = window_client_buffer(window).xres;
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event.height = window_client_buffer(window).yres;
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struct display_packet_header header;
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header.message_id = EVENT_RESIZE;
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header.message_length = sizeof(event);
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assert(window->connection);
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connection_schedule_transmit(window->connection, &header, sizeof(header));
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connection_schedule_transmit(window->connection, &event, sizeof(event));
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}
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