1 /*
2  *                           0BSD
3  *
4  *                    BSD Zero Clause License
5  *
6  *  Copyright (c) 2019 Hermann Meyer
7  *
8  * Permission to use, copy, modify, and/or distribute this software for any
9  * purpose with or without fee is hereby granted.
10 
11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
12  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13  * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
14  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
16  * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17  * PERFORMANCE OF THIS SOFTWARE.
18  *
19  */
20 
21 
22 #include "xmultilistview.h"
23 #include "xmultilistview_private.h"
24 #include "xtooltip.h"
25 #include "xslider.h"
26 
27 
multi_listview_set_active_entry(Widget_t * w,int active)28 void multi_listview_set_active_entry(Widget_t *w, int active) {
29     if(active<0) return;
30     Widget_t* view_port =  w->childlist->childs[0];
31     ViewMultiList_t *filelist = (ViewMultiList_t*)view_port->parent_struct;
32     float value = (float)active;
33     if (value>w->adj->max_value) value = w->adj->max_value;
34     else if (value<w->adj->min_value) value = w->adj->min_value;
35     filelist->active_item = (int)value;
36     adj_set_value(w->adj,filelist->active_item);
37 }
38 
multi_listview_unset_active_entry(Widget_t * w)39 void multi_listview_unset_active_entry(Widget_t *w) {
40     Widget_t* view_port =  w->childlist->childs[0];
41     ViewMultiList_t *filelist = (ViewMultiList_t*)view_port->parent_struct;
42     filelist->active_item = -1;
43     filelist->prelight_item = -1;
44 }
45 
create_multi_listview_viewport(Widget_t * parent,int elem,int width,int height)46 Widget_t* create_multi_listview_viewport(Widget_t *parent, int elem, int width, int height) {
47     Widget_t *wid = create_widget(parent->app, parent, 0, 0, width, height);
48     XSelectInput(wid->app->dpy, wid->widget,StructureNotifyMask|ExposureMask|KeyPressMask
49                     |EnterWindowMask|LeaveWindowMask|ButtonReleaseMask
50                     |ButtonPressMask|Button1MotionMask|PointerMotionMask);
51     wid->scale.gravity = NORTHWEST;
52     ViewMultiList_t *filelist;
53     filelist = (ViewMultiList_t*)malloc(sizeof(ViewMultiList_t));
54     filelist->show_items = elem;
55     filelist->check_dir = 0;
56     wid->flags |= HAS_MEM;
57     wid->parent_struct = filelist;
58     float max_value = -elem;
59     wid->adj_y = add_adjustment(wid,0.0, 0.0, 0.0, max_value,1.0, CL_VIEWPORT);
60     wid->adj = wid->adj_y;
61     wid->func.adj_callback = _set_multi_listview_viewpoint;
62     wid->func.motion_callback = _multi_list_motion;
63     wid->func.leave_callback = _leave_multi_list;
64     wid->func.button_release_callback = _multi_list_entry_released;
65     wid->func.double_click_callback = _multi_list_entry_double_clicked;
66     wid->func.key_press_callback = _multi_list_key_pressed;
67     wid->func.expose_callback = _draw_multi_list;
68     wid->func.configure_notify_callback = _reconfigure_multi_listview_viewport;
69     wid->func.map_notify_callback = _reconfigure_multi_listview_viewport;
70     wid->func.mem_free_callback = multi_listview_mem_free;
71     return wid;
72 }
73 
add_multi_listview(Widget_t * parent,const char * label,int x,int y,int width,int height)74 Widget_t* add_multi_listview(Widget_t *parent, const char * label,
75                 int x, int y, int width, int height) {
76 
77     Widget_t *wid = create_widget(parent->app, parent, x, y, width, height);
78     wid->label = label;
79     wid->scale.gravity = CENTER;
80     wid->flags &= ~USE_TRANSPARENCY;
81     wid->func.expose_callback = _draw_multi_listview;
82     int elem = height/75;
83     wid->adj_y = add_adjustment(wid,0.0, 0.0, 0.0, -1.0,1.0, CL_NONE);
84     wid->adj = wid->adj_y;
85     Widget_t *viewport = create_multi_listview_viewport(wid, elem, width-10, height);
86 
87     ViewMultiList_t *filelist = (ViewMultiList_t*)viewport->parent_struct;
88     filelist->folder = surface_get_png(wid, filelist->folder, LDVAR(directory_png));
89     filelist->folder_select = surface_get_png(wid, filelist->folder_select, LDVAR(directory_select_png));
90     filelist->file = surface_get_png(wid, filelist->folder, LDVAR(file_png));
91     filelist->folder_scaled = NULL;
92     filelist->folder_select_scaled = NULL;
93     filelist->file_scaled = NULL;
94     filelist->scale_down = 0.2;
95     filelist->scale_up = 1.0/0.2;
96     filelist->item_height = 375*filelist->scale_down;
97     filelist->item_width = 500*filelist->scale_down;
98     filelist->column = max(1,width/filelist->item_width);
99     filelist->icon_pos = (filelist->item_width/2) - 120/filelist->scale_up;
100     filelist->slider = add_vslider(wid, "", width-10, 0, 10, height);
101     filelist->slider->func.expose_callback = _draw_multi_listviewslider;
102     filelist->slider->adj_y = add_adjustment(filelist->slider,0.0, 0.0, 0.0, 1.0,1.0, CL_VIEWPORTSLIDER);
103     filelist->slider->adj = filelist->slider->adj_y;
104     filelist->slider->func.value_changed_callback = _set_multi_listviewport;
105     filelist->slider->scale.gravity = WESTSOUTH;
106     filelist->slider->flags &= ~USE_TRANSPARENCY;
107     filelist->slider->flags |= NO_AUTOREPEAT | NO_PROPAGATE;
108     filelist->slider->parent_struct = viewport;
109 
110     return wid;
111 }
112 
multi_listview_mem_free(void * w_,void * user_data)113 void multi_listview_mem_free(void *w_, void* user_data) {
114     Widget_t *w = (Widget_t*)w_;
115     ViewMultiList_t *filelist = (ViewMultiList_t*)w->parent_struct;
116     cairo_surface_destroy(filelist->folder);
117     cairo_surface_destroy(filelist->folder_select);
118     cairo_surface_destroy(filelist->file);
119     cairo_surface_destroy(filelist->folder_scaled);
120     cairo_surface_destroy(filelist->folder_select_scaled);
121     cairo_surface_destroy(filelist->file_scaled);
122     free(filelist);
123 }
124 
multi_listview_remove_list(Widget_t * listview)125 void multi_listview_remove_list(Widget_t *listview) {
126     Widget_t* view_port =  listview->childlist->childs[0];
127     ViewMultiList_t *filelist = (ViewMultiList_t*)view_port->parent_struct;
128     filelist->list_names = NULL;
129     filelist->list_size = 0;
130     XWindowAttributes attrs;
131     XGetWindowAttributes(listview->app->dpy, (Window)listview->widget, &attrs);
132     int height = attrs.height;
133     float elem = height/filelist->item_height;
134     set_adjustment(listview->adj,0.0, 0.0, 0.0, -1.0,1.0, CL_NONE);
135     set_adjustment(view_port->adj,0.0, 0.0, 0.0, -elem,1.0, CL_VIEWPORT);
136     adj_set_value(filelist->slider->adj,0.0);
137 }
138 
multi_listview_set_list(Widget_t * listview,char ** list,int list_size)139 void multi_listview_set_list(Widget_t *listview, char **list, int list_size) {
140     Widget_t* view_port =  listview->childlist->childs[0];
141     ViewMultiList_t *filelist = (ViewMultiList_t*)view_port->parent_struct;
142     filelist->list_names = list;
143     filelist->list_size = list_size;
144     set_adjustment(listview->adj,0.0, 0.0, 0.0, (float)(list_size-1.0),1.0, CL_NONE);
145     float max_value = view_port->adj->max_value+ (float)list_size;
146     set_adjustment(view_port->adj,0.0, 0.0, 0.0, max_value,1.0, CL_VIEWPORT);
147     multi_listview_set_item_size(listview, filelist->scale_down);
148 }
149 
multi_listview_set_check_dir(Widget_t * listview,int set)150 void multi_listview_set_check_dir(Widget_t *listview, int set) {
151     Widget_t* view_port =  listview->childlist->childs[0];
152     ViewMultiList_t *filelist = (ViewMultiList_t*)view_port->parent_struct;
153     filelist->check_dir = set;
154 }
155 
scale_image(Widget_t * listview,ViewMultiList_t * filelist,cairo_surface_t * orig,cairo_surface_t * scaled)156 cairo_surface_t * scale_image(Widget_t *listview, ViewMultiList_t *filelist,
157                 cairo_surface_t *orig, cairo_surface_t *scaled) {
158 
159     cairo_surface_destroy(scaled);
160     scaled = cairo_surface_create_similar (listview->surface,
161         CAIRO_CONTENT_COLOR_ALPHA, filelist->item_width,
162                                     filelist->item_height);
163     assert(cairo_surface_status(scaled) == CAIRO_STATUS_SUCCESS);
164 
165     cairo_t *cri = cairo_create (scaled);
166     cairo_scale(cri,filelist->scale_down, filelist->scale_down);
167     cairo_set_source_surface (cri, orig,0,0);
168     cairo_rectangle(cri, 0, 0, filelist->item_width* filelist->scale_up,
169                                 filelist->item_height* filelist->scale_up);
170     cairo_fill (cri);
171     cairo_destroy(cri);
172     return scaled;
173 }
174 
multi_listview_set_item_size(Widget_t * listview,float set)175 void multi_listview_set_item_size(Widget_t *listview, float set) {
176     Widget_t* view_port =  listview->childlist->childs[0];
177     ViewMultiList_t *filelist = (ViewMultiList_t*)view_port->parent_struct;
178     filelist->scale_down = set;
179     filelist->scale_up = 1.0/set;
180     filelist->item_height = 375*filelist->scale_down;
181     filelist->item_width = 500*filelist->scale_down;
182     _reconfigure_multi_listview_viewport(view_port, NULL);
183     filelist->folder_scaled = scale_image(listview,filelist,filelist->folder, filelist->folder_scaled);
184     filelist->folder_select_scaled = scale_image(listview,filelist,filelist->folder_select, filelist->folder_select_scaled);
185     filelist->file_scaled = scale_image(listview,filelist,filelist->file, filelist->file_scaled);
186     expose_widget(view_port);
187 }
188