Nuklear
Minimal-state, immediate-mode graphical user interface toolkit written in ANSI C.
 
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nuklear_widget.c
1#include "nuklear.h"
2#include "nuklear_internal.h"
3
4/* ===============================================================
5 *
6 * WIDGET
7 *
8 * ===============================================================*/
9NK_API struct nk_rect
10nk_widget_bounds(const struct nk_context *ctx)
11{
12 struct nk_rect bounds;
13 NK_ASSERT(ctx);
14 NK_ASSERT(ctx->current);
15 if (!ctx || !ctx->current)
16 return nk_rect(0,0,0,0);
17 nk_layout_peek(&bounds, ctx);
18 return bounds;
19}
20NK_API struct nk_vec2
21nk_widget_position(const struct nk_context *ctx)
22{
23 struct nk_rect bounds;
24 NK_ASSERT(ctx);
25 NK_ASSERT(ctx->current);
26 if (!ctx || !ctx->current)
27 return nk_vec2(0,0);
28
29 nk_layout_peek(&bounds, ctx);
30 return nk_vec2(bounds.x, bounds.y);
31}
32NK_API struct nk_vec2
33nk_widget_size(const struct nk_context *ctx)
34{
35 struct nk_rect bounds;
36 NK_ASSERT(ctx);
37 NK_ASSERT(ctx->current);
38 if (!ctx || !ctx->current)
39 return nk_vec2(0,0);
40
41 nk_layout_peek(&bounds, ctx);
42 return nk_vec2(bounds.w, bounds.h);
43}
44NK_API float
45nk_widget_width(const struct nk_context *ctx)
46{
47 struct nk_rect bounds;
48 NK_ASSERT(ctx);
49 NK_ASSERT(ctx->current);
50 if (!ctx || !ctx->current)
51 return 0;
52
53 nk_layout_peek(&bounds, ctx);
54 return bounds.w;
55}
56NK_API float
57nk_widget_height(const struct nk_context *ctx)
58{
59 struct nk_rect bounds;
60 NK_ASSERT(ctx);
61 NK_ASSERT(ctx->current);
62 if (!ctx || !ctx->current)
63 return 0;
64
65 nk_layout_peek(&bounds, ctx);
66 return bounds.h;
67}
68NK_API nk_bool
69nk_widget_is_hovered(const struct nk_context *ctx)
70{
71 struct nk_rect c, v;
72 struct nk_rect bounds;
73 NK_ASSERT(ctx);
74 NK_ASSERT(ctx->current);
75 NK_ASSERT(ctx->current->layout);
76 if (!ctx || !ctx->current || !ctx->current->layout || (ctx->active != ctx->current && !((int)ctx->current->layout->type & (int)NK_PANEL_SET_POPUP)))
77 return 0;
78
79 c = ctx->current->layout->clip;
80 c.x = (float)((int)c.x);
81 c.y = (float)((int)c.y);
82 c.w = (float)((int)c.w);
83 c.h = (float)((int)c.h);
84
85 nk_layout_peek(&bounds, ctx);
86 nk_unify(&v, &c, bounds.x, bounds.y, bounds.x + bounds.w, bounds.y + bounds.h);
87 if (!NK_INTERSECT(c.x, c.y, c.w, c.h, bounds.x, bounds.y, bounds.w, bounds.h))
88 return 0;
89 return nk_input_is_mouse_hovering_rect(&ctx->input, bounds);
90}
91NK_API nk_bool
92nk_widget_is_mouse_clicked(const struct nk_context *ctx, enum nk_buttons btn)
93{
94 struct nk_rect c, v;
95 struct nk_rect bounds;
96 NK_ASSERT(ctx);
97 NK_ASSERT(ctx->current);
98 NK_ASSERT(ctx->current->layout);
99 if (!ctx || !ctx->current || !ctx->current->layout || (ctx->active != ctx->current && !((int)ctx->current->layout->type & (int)NK_PANEL_SET_POPUP)))
100 return 0;
101
102 c = ctx->current->layout->clip;
103 c.x = (float)((int)c.x);
104 c.y = (float)((int)c.y);
105 c.w = (float)((int)c.w);
106 c.h = (float)((int)c.h);
107
108 nk_layout_peek(&bounds, ctx);
109 nk_unify(&v, &c, bounds.x, bounds.y, bounds.x + bounds.w, bounds.y + bounds.h);
110 if (!NK_INTERSECT(c.x, c.y, c.w, c.h, bounds.x, bounds.y, bounds.w, bounds.h))
111 return 0;
112 return nk_input_mouse_clicked(&ctx->input, btn, bounds);
113}
114NK_API nk_bool
115nk_widget_has_mouse_click_down(const struct nk_context *ctx, enum nk_buttons btn, nk_bool down)
116{
117 struct nk_rect c, v;
118 struct nk_rect bounds;
119 NK_ASSERT(ctx);
120 NK_ASSERT(ctx->current);
121 NK_ASSERT(ctx->current->layout);
122 if (!ctx || !ctx->current || !ctx->current->layout || (ctx->active != ctx->current && !((int)ctx->current->layout->type & (int)NK_PANEL_SET_POPUP)))
123 return 0;
124
125 c = ctx->current->layout->clip;
126 c.x = (float)((int)c.x);
127 c.y = (float)((int)c.y);
128 c.w = (float)((int)c.w);
129 c.h = (float)((int)c.h);
130
131 nk_layout_peek(&bounds, ctx);
132 nk_unify(&v, &c, bounds.x, bounds.y, bounds.x + bounds.w, bounds.y + bounds.h);
133 if (!NK_INTERSECT(c.x, c.y, c.w, c.h, bounds.x, bounds.y, bounds.w, bounds.h))
134 return 0;
135 return nk_input_has_mouse_click_down_in_rect(&ctx->input, btn, bounds, down);
136}
137NK_API enum nk_widget_layout_states
138nk_widget(struct nk_rect *bounds, const struct nk_context *ctx)
139{
140 struct nk_rect c, v;
141 struct nk_window *win;
142 struct nk_panel *layout;
143 const struct nk_input *in;
144
145 NK_ASSERT(ctx);
146 NK_ASSERT(ctx->current);
147 NK_ASSERT(ctx->current->layout);
148 if (!ctx || !ctx->current || !ctx->current->layout)
149 return NK_WIDGET_INVALID;
150
151 /* allocate space and check if the widget needs to be updated and drawn */
152 nk_panel_alloc_space(bounds, ctx);
153 win = ctx->current;
154 layout = win->layout;
155 in = &ctx->input;
156 c = layout->clip;
157
158 /* if one of these triggers you forgot to add an `if` condition around either
159 a window, group, popup, combobox or contextual menu `begin` and `end` block.
160 Example:
161 if (nk_begin(...) {...} nk_end(...); or
162 if (nk_group_begin(...) { nk_group_end(...);} */
163 NK_ASSERT(!(layout->flags & NK_WINDOW_MINIMIZED));
164 NK_ASSERT(!(layout->flags & NK_WINDOW_HIDDEN));
165 NK_ASSERT(!(layout->flags & NK_WINDOW_CLOSED));
166
167 /* need to convert to int here to remove floating point errors */
168 bounds->x = (float)((int)bounds->x);
169 bounds->y = (float)((int)bounds->y);
170 bounds->w = (float)((int)bounds->w);
171 bounds->h = (float)((int)bounds->h);
172
173 c.x = (float)((int)c.x);
174 c.y = (float)((int)c.y);
175 c.w = (float)((int)c.w);
176 c.h = (float)((int)c.h);
177
178 nk_unify(&v, &c, bounds->x, bounds->y, bounds->x + bounds->w, bounds->y + bounds->h);
179 if (!NK_INTERSECT(c.x, c.y, c.w, c.h, bounds->x, bounds->y, bounds->w, bounds->h))
180 return NK_WIDGET_INVALID;
181 if (win->widgets_disabled)
182 return NK_WIDGET_DISABLED;
183 if (!NK_INBOX(in->mouse.pos.x, in->mouse.pos.y, v.x, v.y, v.w, v.h))
184 return NK_WIDGET_ROM;
185 return NK_WIDGET_VALID;
186}
187NK_API void
188nk_spacing(struct nk_context *ctx, int cols)
189{
190 struct nk_window *win;
191 struct nk_panel *layout;
192 struct nk_rect none;
193 int i, index, rows;
194
195 NK_ASSERT(ctx);
196 NK_ASSERT(ctx->current);
197 NK_ASSERT(ctx->current->layout);
198 if (!ctx || !ctx->current || !ctx->current->layout)
199 return;
200
201 /* spacing over row boundaries */
202 win = ctx->current;
203 layout = win->layout;
204 index = (layout->row.index + cols) % layout->row.columns;
205 rows = (layout->row.index + cols) / layout->row.columns;
206 if (rows) {
207 for (i = 0; i < rows; ++i)
208 nk_panel_alloc_row(ctx, win);
209 cols = index;
210 }
211 /* non table layout need to allocate space */
212 if (layout->row.type != NK_LAYOUT_DYNAMIC_FIXED &&
213 layout->row.type != NK_LAYOUT_STATIC_FIXED) {
214 for (i = 0; i < cols; ++i)
215 nk_panel_alloc_space(&none, ctx);
216 } layout->row.index = index;
217}
218NK_API void
219nk_widget_disable_begin(struct nk_context* ctx)
220{
221 struct nk_window* win;
222 struct nk_style* style;
223
224 NK_ASSERT(ctx);
225 NK_ASSERT(ctx->current);
226
227 if (!ctx || !ctx->current)
228 return;
229
230 win = ctx->current;
231 style = &ctx->style;
232
233 win->widgets_disabled = nk_true;
234
235 style->button.color_factor_text = style->button.disabled_factor;
236 style->button.color_factor_background = style->button.disabled_factor;
237 style->chart.color_factor = style->chart.disabled_factor;
238 style->checkbox.color_factor = style->checkbox.disabled_factor;
239 style->combo.color_factor = style->combo.disabled_factor;
240 style->combo.button.color_factor_text = style->combo.button.disabled_factor;
241 style->combo.button.color_factor_background = style->combo.button.disabled_factor;
242 style->contextual_button.color_factor_text = style->contextual_button.disabled_factor;
243 style->contextual_button.color_factor_background = style->contextual_button.disabled_factor;
244 style->edit.color_factor = style->edit.disabled_factor;
245 style->edit.scrollbar.color_factor = style->edit.scrollbar.disabled_factor;
246 style->menu_button.color_factor_text = style->menu_button.disabled_factor;
247 style->menu_button.color_factor_background = style->menu_button.disabled_factor;
248 style->option.color_factor = style->option.disabled_factor;
249 style->progress.color_factor = style->progress.disabled_factor;
250 style->property.color_factor = style->property.disabled_factor;
251 style->property.inc_button.color_factor_text = style->property.inc_button.disabled_factor;
252 style->property.inc_button.color_factor_background = style->property.inc_button.disabled_factor;
253 style->property.dec_button.color_factor_text = style->property.dec_button.disabled_factor;
254 style->property.dec_button.color_factor_background = style->property.dec_button.disabled_factor;
255 style->property.edit.color_factor = style->property.edit.disabled_factor;
256 style->scrollh.color_factor = style->scrollh.disabled_factor;
257 style->scrollh.inc_button.color_factor_text = style->scrollh.inc_button.disabled_factor;
258 style->scrollh.inc_button.color_factor_background = style->scrollh.inc_button.disabled_factor;
259 style->scrollh.dec_button.color_factor_text = style->scrollh.dec_button.disabled_factor;
260 style->scrollh.dec_button.color_factor_background = style->scrollh.dec_button.disabled_factor;
261 style->scrollv.color_factor = style->scrollv.disabled_factor;
262 style->scrollv.inc_button.color_factor_text = style->scrollv.inc_button.disabled_factor;
263 style->scrollv.inc_button.color_factor_background = style->scrollv.inc_button.disabled_factor;
264 style->scrollv.dec_button.color_factor_text = style->scrollv.dec_button.disabled_factor;
265 style->scrollv.dec_button.color_factor_background = style->scrollv.dec_button.disabled_factor;
266 style->selectable.color_factor = style->selectable.disabled_factor;
267 style->slider.color_factor = style->slider.disabled_factor;
268 style->slider.inc_button.color_factor_text = style->slider.inc_button.disabled_factor;
269 style->slider.inc_button.color_factor_background = style->slider.inc_button.disabled_factor;
270 style->slider.dec_button.color_factor_text = style->slider.dec_button.disabled_factor;
271 style->slider.dec_button.color_factor_background = style->slider.dec_button.disabled_factor;
272 style->tab.color_factor = style->tab.disabled_factor;
273 style->tab.node_maximize_button.color_factor_text = style->tab.node_maximize_button.disabled_factor;
274 style->tab.node_minimize_button.color_factor_text = style->tab.node_minimize_button.disabled_factor;
275 style->tab.tab_maximize_button.color_factor_text = style->tab.tab_maximize_button.disabled_factor;
276 style->tab.tab_maximize_button.color_factor_background = style->tab.tab_maximize_button.disabled_factor;
277 style->tab.tab_minimize_button.color_factor_text = style->tab.tab_minimize_button.disabled_factor;
278 style->tab.tab_minimize_button.color_factor_background = style->tab.tab_minimize_button.disabled_factor;
279 style->text.color_factor = style->text.disabled_factor;
280}
281NK_API void
282nk_widget_disable_end(struct nk_context* ctx)
283{
284 struct nk_window* win;
285 struct nk_style* style;
286
287 NK_ASSERT(ctx);
288 NK_ASSERT(ctx->current);
289
290 if (!ctx || !ctx->current)
291 return;
292
293 win = ctx->current;
294 style = &ctx->style;
295
296 win->widgets_disabled = nk_false;
297
298 style->button.color_factor_text = 1.0f;
299 style->button.color_factor_background = 1.0f;
300 style->chart.color_factor = 1.0f;
301 style->checkbox.color_factor = 1.0f;
302 style->combo.color_factor = 1.0f;
303 style->combo.button.color_factor_text = 1.0f;
304 style->combo.button.color_factor_background = 1.0f;
305 style->contextual_button.color_factor_text = 1.0f;
306 style->contextual_button.color_factor_background = 1.0f;
307 style->edit.color_factor = 1.0f;
308 style->edit.scrollbar.color_factor = 1.0f;
309 style->menu_button.color_factor_text = 1.0f;
310 style->menu_button.color_factor_background = 1.0f;
311 style->option.color_factor = 1.0f;
312 style->progress.color_factor = 1.0f;
313 style->property.color_factor = 1.0f;
314 style->property.inc_button.color_factor_text = 1.0f;
315 style->property.inc_button.color_factor_background = 1.0f;
316 style->property.dec_button.color_factor_text = 1.0f;
317 style->property.dec_button.color_factor_background = 1.0f;
318 style->property.edit.color_factor = 1.0f;
319 style->scrollh.color_factor = 1.0f;
320 style->scrollh.inc_button.color_factor_text = 1.0f;
321 style->scrollh.inc_button.color_factor_background = 1.0f;
322 style->scrollh.dec_button.color_factor_text = 1.0f;
323 style->scrollh.dec_button.color_factor_background = 1.0f;
324 style->scrollv.color_factor = 1.0f;
325 style->scrollv.inc_button.color_factor_text = 1.0f;
326 style->scrollv.inc_button.color_factor_background = 1.0f;
327 style->scrollv.dec_button.color_factor_text = 1.0f;
328 style->scrollv.dec_button.color_factor_background = 1.0f;
329 style->selectable.color_factor = 1.0f;
330 style->slider.color_factor = 1.0f;
331 style->slider.inc_button.color_factor_text = 1.0f;
332 style->slider.inc_button.color_factor_background = 1.0f;
333 style->slider.dec_button.color_factor_text = 1.0f;
334 style->slider.dec_button.color_factor_background = 1.0f;
335 style->tab.color_factor = 1.0f;
336 style->tab.node_maximize_button.color_factor_text = 1.0f;
337 style->tab.node_minimize_button.color_factor_text = 1.0f;
338 style->tab.tab_maximize_button.color_factor_text = 1.0f;
339 style->tab.tab_maximize_button.color_factor_background = 1.0f;
340 style->tab.tab_minimize_button.color_factor_text = 1.0f;
341 style->tab.tab_minimize_button.color_factor_background = 1.0f;
342 style->text.color_factor = 1.0f;
343}
nk_context
Definition nuklear.h:5761
nk_input
Definition nuklear.h:4742
nk_panel
Definition nuklear.h:5514
nk_rect
Definition nuklear.h:270
nk_style
Definition nuklear.h:5398
nk_vec2
Definition nuklear.h:268
nk_window
Definition nuklear.h:5594