340 lines
11 KiB
C
340 lines
11 KiB
C
/* vim: tabstop=4 shiftwidth=4 noexpandtab
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* This file is part of ToaruOS and is released under the terms
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* of the NCSA / University of Illinois License - see LICENSE.md
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* Copyright (C) 2012-2018 K. Lange
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*
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* Client-side Window Decoration library
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*/
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#include <stdint.h>
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#include <math.h>
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#include <dlfcn.h>
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#include <toaru/graphics.h>
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#include <toaru/yutani.h>
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#include <toaru/decorations.h>
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#include <toaru/sdf.h>
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#include <toaru/menu.h>
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uint32_t decor_top_height = 33;
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uint32_t decor_bottom_height = 6;
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uint32_t decor_left_width = 6;
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uint32_t decor_right_width = 6;
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#define TEXT_OFFSET_X 10
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#define TEXT_OFFSET_Y 3
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#define BORDERCOLOR rgb(59,59,59)
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#define BORDERCOLOR_INACTIVE rgb(30,30,30)
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#define TEXTCOLOR rgb(230,230,230)
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#define TEXTCOLOR_INACTIVE rgb(140,140,140)
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void (*decor_render_decorations)(yutani_window_t *, gfx_context_t *, char *, int) = NULL;
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int (*decor_check_button_press)(yutani_window_t *, int x, int y) = NULL;
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static void (*callback_close)(yutani_window_t *) = NULL;
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static void (*callback_resize)(yutani_window_t *) = NULL;
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static void (*callback_maximize)(yutani_window_t *) = NULL;
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static int close_enough(struct yutani_msg_window_mouse_event * me) {
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return (me->command == YUTANI_MOUSE_EVENT_RAISE &&
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sqrt(pow(me->new_x - me->old_x, 2.0) + pow(me->new_y - me->old_y, 2.0)) < 10.0);
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}
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static void render_decorations_simple(yutani_window_t * window, gfx_context_t * ctx, char * title, int decors_active) {
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uint32_t color = BORDERCOLOR;
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if (decors_active == DECOR_INACTIVE) {
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color = BORDERCOLOR_INACTIVE;
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}
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for (int i = 0; i < (int)window->height; ++i) {
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GFX(ctx, 0, i) = color;
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GFX(ctx, window->width - 1, i) = color;
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}
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for (int i = 1; i < (int)decor_top_height; ++i) {
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for (int j = 1; j < (int)window->width - 1; ++j) {
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GFX(ctx, j, i) = color;
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}
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}
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if (decors_active == DECOR_INACTIVE) {
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draw_sdf_string(ctx, TEXT_OFFSET_X, TEXT_OFFSET_Y, title, 14, TEXTCOLOR_INACTIVE, SDF_FONT_THIN);
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draw_sdf_string(ctx, window->width - 20, TEXT_OFFSET_Y, "x", 14, TEXTCOLOR_INACTIVE, SDF_FONT_THIN);
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} else {
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draw_sdf_string(ctx, TEXT_OFFSET_X, TEXT_OFFSET_Y, title, 14, TEXTCOLOR, SDF_FONT_THIN);
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draw_sdf_string(ctx, window->width - 20, TEXT_OFFSET_Y, "x", 14, TEXTCOLOR, SDF_FONT_THIN);
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}
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for (uint32_t i = 0; i < window->width; ++i) {
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GFX(ctx, i, 0) = color;
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GFX(ctx, i, decor_top_height - 1) = color;
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GFX(ctx, i, window->height - 1) = color;
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}
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}
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static int check_button_press_simple(yutani_window_t * window, int x, int y) {
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if (x >= (int)window->width - 20 && x <= (int)window->width - 2 && y >= 2) {
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return DECOR_CLOSE;
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}
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return 0;
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}
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static void initialize_simple() {
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decor_top_height = 24;
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decor_bottom_height = 1;
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decor_left_width = 1;
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decor_right_width = 1;
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decor_render_decorations = render_decorations_simple;
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decor_check_button_press = check_button_press_simple;
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}
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void render_decorations(yutani_window_t * window, gfx_context_t * ctx, char * title) {
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if (!window) return;
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window->decorator_flags |= DECOR_FLAG_DECORATED;
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if (window->focused || !hashmap_is_empty(menu_get_windows_hash())) {
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decor_render_decorations(window, ctx, title, DECOR_ACTIVE);
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} else {
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decor_render_decorations(window, ctx, title, DECOR_INACTIVE);
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}
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}
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void render_decorations_inactive(yutani_window_t * window, gfx_context_t * ctx, char * title) {
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if (!window) return;
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window->decorator_flags |= DECOR_FLAG_DECORATED;
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decor_render_decorations(window, ctx, title, DECOR_INACTIVE);
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}
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static void _decor_maximize(yutani_t * yctx, yutani_window_t * window) {
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if (callback_maximize) {
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callback_maximize(window);
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} else {
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yutani_special_request(yctx, window, YUTANI_SPECIAL_REQUEST_MAXIMIZE);
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}
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}
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static yutani_window_t * _decor_menu_owner_window = NULL;
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static struct MenuList * _decor_menu = NULL;
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static void _decor_start_move(struct MenuEntry * self) {
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if (!_decor_menu_owner_window)
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return;
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yutani_focus_window(_decor_menu_owner_window->ctx, _decor_menu_owner_window->wid);
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yutani_window_drag_start(_decor_menu_owner_window->ctx, _decor_menu_owner_window);
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}
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static void _decor_start_maximize(struct MenuEntry * self) {
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if (!_decor_menu_owner_window)
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return;
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_decor_maximize(_decor_menu_owner_window->ctx, _decor_menu_owner_window);
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yutani_focus_window(_decor_menu_owner_window->ctx, _decor_menu_owner_window->wid);
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}
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static void _decor_close(struct MenuEntry * self) {
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if (!_decor_menu_owner_window)
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return;
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yutani_special_request(_decor_menu_owner_window->ctx, _decor_menu_owner_window, YUTANI_SPECIAL_REQUEST_PLEASE_CLOSE);
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}
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yutani_window_t * decor_show_default_menu(yutani_window_t * window, int x, int y) {
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if (_decor_menu->window) return NULL;
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_decor_menu_owner_window = window;
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menu_show(_decor_menu, window->ctx);
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if (x + _decor_menu->window->width > window->ctx->display_width) {
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yutani_window_move(window->ctx, _decor_menu->window, x - _decor_menu->window->width, y);
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} else {
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yutani_window_move(window->ctx, _decor_menu->window, x, y);
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}
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return _decor_menu->window;
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}
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void init_decorations() {
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char * tmp = getenv("WM_THEME");
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char * theme = tmp ? strdup(tmp) : NULL;
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_decor_menu = menu_create();
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menu_insert(_decor_menu, menu_create_normal(NULL, NULL, "Maximize", _decor_start_maximize));
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menu_insert(_decor_menu, menu_create_normal(NULL, NULL, "Move", _decor_start_move));
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menu_insert(_decor_menu, menu_create_separator());
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menu_insert(_decor_menu, menu_create_normal(NULL, NULL, "Close", _decor_close));
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if (!theme || !strcmp(theme, "simple")) {
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initialize_simple();
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} else {
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char * options = strchr(theme,',');
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if (options) {
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*options = '\0';
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options++;
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}
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char lib_name[100];
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sprintf(lib_name, "libtoaru_decor-%s.so", theme);
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void * theme_lib = dlopen(lib_name, 0);
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if (!theme_lib) {
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goto _theme_error;
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}
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void (*theme_init)(char *) = dlsym(theme_lib, "decor_init");
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if (!theme_init) {
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goto _theme_error;
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}
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theme_init(options);
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return;
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_theme_error:
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fprintf(stderr, "decorations: could not load theme `%s`: %s\n", theme, dlerror());
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initialize_simple();
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}
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}
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uint32_t decor_width() {
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return decor_left_width + decor_right_width;
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}
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uint32_t decor_height() {
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return decor_top_height + decor_bottom_height;
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}
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void decor_set_close_callback(void (*callback)(yutani_window_t *)) {
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callback_close = callback;
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}
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void decor_set_resize_callback(void (*callback)(yutani_window_t *)) {
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callback_resize = callback;
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}
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void decor_set_maximize_callback(void (*callback)(yutani_window_t *)) {
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callback_maximize = callback;
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}
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static int within_decors(yutani_window_t * window, int x, int y) {
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if ((x <= (int)decor_left_width || x >= (int)window->width - (int)decor_right_width) && (x > 0 && x < (int)window->width)) return 1;
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if ((y <= (int)decor_top_height || y >= (int)window->height - (int)decor_bottom_height) && (y > 0 && y < (int)window->height)) return 1;
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return 0;
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}
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#define LEFT_SIDE (me->new_x <= (int)decor_left_width)
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#define RIGHT_SIDE (me->new_x >= (int)window->width - (int)decor_right_width)
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#define TOP_SIDE (me->new_y <= (int)decor_top_height)
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#define BOTTOM_SIDE (me->new_y >= (int)window->height - (int)decor_bottom_height)
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static yutani_scale_direction_t check_resize_direction(struct yutani_msg_window_mouse_event * me, yutani_window_t * window) {
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yutani_scale_direction_t resize_direction = SCALE_NONE;
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if (LEFT_SIDE && !TOP_SIDE && !BOTTOM_SIDE) {
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resize_direction = SCALE_LEFT;
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} else if (RIGHT_SIDE && !TOP_SIDE && !BOTTOM_SIDE) {
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resize_direction = SCALE_RIGHT;
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} else if (BOTTOM_SIDE && !LEFT_SIDE && !RIGHT_SIDE) {
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resize_direction = SCALE_DOWN;
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} else if (BOTTOM_SIDE && LEFT_SIDE) {
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resize_direction = SCALE_DOWN_LEFT;
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} else if (BOTTOM_SIDE && RIGHT_SIDE) {
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resize_direction = SCALE_DOWN_RIGHT;
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} else if (TOP_SIDE && LEFT_SIDE) {
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resize_direction = SCALE_UP_LEFT;
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} else if (TOP_SIDE && RIGHT_SIDE) {
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resize_direction = SCALE_UP_RIGHT;
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} else if (TOP_SIDE && (me->new_y < 5)) {
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resize_direction = SCALE_UP;
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}
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return resize_direction;
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}
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static yutani_scale_direction_t old_resize_direction = SCALE_NONE;
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int decor_handle_event(yutani_t * yctx, yutani_msg_t * m) {
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if (m) {
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switch (m->type) {
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case YUTANI_MSG_WINDOW_MOUSE_EVENT:
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{
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struct yutani_msg_window_mouse_event * me = (void*)m->data;
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yutani_window_t * window = hashmap_get(yctx->windows, (void*)me->wid);
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if (!window) return 0;
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if (!(window->decorator_flags & DECOR_FLAG_DECORATED)) return 0;
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if (within_decors(window, me->new_x, me->new_y)) {
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int button = decor_check_button_press(window, me->new_x, me->new_y);
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if (me->command == YUTANI_MOUSE_EVENT_DOWN && me->buttons & YUTANI_MOUSE_BUTTON_LEFT) {
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if (!button) {
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/* Resize edges */
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yutani_scale_direction_t resize_direction = check_resize_direction(me, window);
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if (resize_direction != SCALE_NONE) {
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yutani_window_resize_start(yctx, window, resize_direction);
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}
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if (me->new_y < (int)decor_top_height && resize_direction == SCALE_NONE) {
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yutani_window_drag_start(yctx, window);
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}
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return DECOR_OTHER;
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}
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}
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if (!button && (me->buttons & YUTANI_MOUSE_BUTTON_RIGHT)) {
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return DECOR_RIGHT;
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}
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if (me->command == YUTANI_MOUSE_EVENT_MOVE) {
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if (!button) {
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/* Resize edges */
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yutani_scale_direction_t resize_direction = check_resize_direction(me, window);
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if (resize_direction != old_resize_direction) {
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if (resize_direction == SCALE_NONE) {
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yutani_window_show_mouse(yctx, window, YUTANI_CURSOR_TYPE_RESET);
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} else {
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switch (resize_direction) {
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case SCALE_UP:
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case SCALE_DOWN:
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yutani_window_show_mouse(yctx, window, YUTANI_CURSOR_TYPE_RESIZE_VERTICAL);
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break;
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case SCALE_LEFT:
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case SCALE_RIGHT:
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yutani_window_show_mouse(yctx, window, YUTANI_CURSOR_TYPE_RESIZE_HORIZONTAL);
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break;
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case SCALE_DOWN_RIGHT:
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case SCALE_UP_LEFT:
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yutani_window_show_mouse(yctx, window, YUTANI_CURSOR_TYPE_RESIZE_UP_DOWN);
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break;
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case SCALE_DOWN_LEFT:
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case SCALE_UP_RIGHT:
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yutani_window_show_mouse(yctx, window, YUTANI_CURSOR_TYPE_RESIZE_DOWN_UP);
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break;
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case SCALE_AUTO:
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case SCALE_NONE:
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break;
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}
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}
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old_resize_direction = resize_direction;
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}
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}
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}
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if (me->command == YUTANI_MOUSE_EVENT_CLICK || close_enough(me)) {
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/* Determine if we clicked on a button */
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switch (button) {
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case DECOR_CLOSE:
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if (callback_close) callback_close(window);
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break;
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case DECOR_RESIZE:
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if (callback_resize) callback_resize(window);
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break;
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case DECOR_MAXIMIZE:
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_decor_maximize(yctx, window);
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break;
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default:
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break;
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}
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return button;
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}
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} else {
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if (old_resize_direction != SCALE_NONE) {
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yutani_window_show_mouse(yctx, window, YUTANI_CURSOR_TYPE_RESET);
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old_resize_direction = 0;
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}
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}
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}
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break;
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}
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}
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return 0;
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}
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