mirror of https://github.com/vurtun/nuklear.git
321 lines
10 KiB
C
321 lines
10 KiB
C
#include "nuklear.h"
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#include "nuklear_internal.h"
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/* ===============================================================
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*
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* TOGGLE
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*
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* ===============================================================*/
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NK_LIB int
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nk_toggle_behavior(const struct nk_input *in, struct nk_rect select,
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nk_flags *state, int active)
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{
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nk_widget_state_reset(state);
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if (nk_button_behavior(state, select, in, NK_BUTTON_DEFAULT)) {
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*state = NK_WIDGET_STATE_ACTIVE;
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active = !active;
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}
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if (*state & NK_WIDGET_STATE_HOVER && !nk_input_is_mouse_prev_hovering_rect(in, select))
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*state |= NK_WIDGET_STATE_ENTERED;
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else if (nk_input_is_mouse_prev_hovering_rect(in, select))
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*state |= NK_WIDGET_STATE_LEFT;
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return active;
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}
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NK_LIB void
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nk_draw_checkbox(struct nk_command_buffer *out,
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nk_flags state, const struct nk_style_toggle *style, int active,
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const struct nk_rect *label, const struct nk_rect *selector,
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const struct nk_rect *cursors, const char *string, int len,
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const struct nk_user_font *font)
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{
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const struct nk_style_item *background;
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const struct nk_style_item *cursor;
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struct nk_text text;
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/* select correct colors/images */
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if (state & NK_WIDGET_STATE_HOVER) {
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background = &style->hover;
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cursor = &style->cursor_hover;
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text.text = style->text_hover;
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} else if (state & NK_WIDGET_STATE_ACTIVED) {
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background = &style->hover;
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cursor = &style->cursor_hover;
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text.text = style->text_active;
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} else {
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background = &style->normal;
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cursor = &style->cursor_normal;
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text.text = style->text_normal;
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}
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/* draw background and cursor */
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if (background->type == NK_STYLE_ITEM_COLOR) {
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nk_fill_rect(out, *selector, 0, style->border_color);
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nk_fill_rect(out, nk_shrink_rect(*selector, style->border), 0, background->data.color);
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} else nk_draw_image(out, *selector, &background->data.image, nk_white);
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if (active) {
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if (cursor->type == NK_STYLE_ITEM_IMAGE)
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nk_draw_image(out, *cursors, &cursor->data.image, nk_white);
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else nk_fill_rect(out, *cursors, 0, cursor->data.color);
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}
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text.padding.x = 0;
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text.padding.y = 0;
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text.background = style->text_background;
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nk_widget_text(out, *label, string, len, &text, NK_TEXT_LEFT, font);
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}
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NK_LIB void
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nk_draw_option(struct nk_command_buffer *out,
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nk_flags state, const struct nk_style_toggle *style, int active,
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const struct nk_rect *label, const struct nk_rect *selector,
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const struct nk_rect *cursors, const char *string, int len,
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const struct nk_user_font *font)
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{
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const struct nk_style_item *background;
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const struct nk_style_item *cursor;
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struct nk_text text;
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/* select correct colors/images */
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if (state & NK_WIDGET_STATE_HOVER) {
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background = &style->hover;
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cursor = &style->cursor_hover;
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text.text = style->text_hover;
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} else if (state & NK_WIDGET_STATE_ACTIVED) {
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background = &style->hover;
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cursor = &style->cursor_hover;
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text.text = style->text_active;
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} else {
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background = &style->normal;
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cursor = &style->cursor_normal;
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text.text = style->text_normal;
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}
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/* draw background and cursor */
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if (background->type == NK_STYLE_ITEM_COLOR) {
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nk_fill_circle(out, *selector, style->border_color);
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nk_fill_circle(out, nk_shrink_rect(*selector, style->border), background->data.color);
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} else nk_draw_image(out, *selector, &background->data.image, nk_white);
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if (active) {
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if (cursor->type == NK_STYLE_ITEM_IMAGE)
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nk_draw_image(out, *cursors, &cursor->data.image, nk_white);
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else nk_fill_circle(out, *cursors, cursor->data.color);
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}
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text.padding.x = 0;
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text.padding.y = 0;
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text.background = style->text_background;
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nk_widget_text(out, *label, string, len, &text, NK_TEXT_LEFT, font);
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}
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NK_LIB int
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nk_do_toggle(nk_flags *state,
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struct nk_command_buffer *out, struct nk_rect r,
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int *active, const char *str, int len, enum nk_toggle_type type,
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const struct nk_style_toggle *style, const struct nk_input *in,
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const struct nk_user_font *font)
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{
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int was_active;
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struct nk_rect bounds;
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struct nk_rect select;
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struct nk_rect cursor;
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struct nk_rect label;
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NK_ASSERT(style);
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NK_ASSERT(out);
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NK_ASSERT(font);
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if (!out || !style || !font || !active)
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return 0;
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r.w = NK_MAX(r.w, font->height + 2 * style->padding.x);
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r.h = NK_MAX(r.h, font->height + 2 * style->padding.y);
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/* add additional touch padding for touch screen devices */
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bounds.x = r.x - style->touch_padding.x;
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bounds.y = r.y - style->touch_padding.y;
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bounds.w = r.w + 2 * style->touch_padding.x;
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bounds.h = r.h + 2 * style->touch_padding.y;
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/* calculate the selector space */
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select.w = font->height;
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select.h = select.w;
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select.y = r.y + r.h/2.0f - select.h/2.0f;
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select.x = r.x;
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/* calculate the bounds of the cursor inside the selector */
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cursor.x = select.x + style->padding.x + style->border;
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cursor.y = select.y + style->padding.y + style->border;
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cursor.w = select.w - (2 * style->padding.x + 2 * style->border);
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cursor.h = select.h - (2 * style->padding.y + 2 * style->border);
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/* label behind the selector */
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label.x = select.x + select.w + style->spacing;
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label.y = select.y;
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label.w = NK_MAX(r.x + r.w, label.x) - label.x;
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label.h = select.w;
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/* update selector */
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was_active = *active;
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*active = nk_toggle_behavior(in, bounds, state, *active);
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/* draw selector */
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if (style->draw_begin)
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style->draw_begin(out, style->userdata);
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if (type == NK_TOGGLE_CHECK) {
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nk_draw_checkbox(out, *state, style, *active, &label, &select, &cursor, str, len, font);
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} else {
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nk_draw_option(out, *state, style, *active, &label, &select, &cursor, str, len, font);
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}
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if (style->draw_end)
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style->draw_end(out, style->userdata);
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return (was_active != *active);
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}
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/*----------------------------------------------------------------
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*
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* CHECKBOX
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*
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* --------------------------------------------------------------*/
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NK_API int
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nk_check_text(struct nk_context *ctx, const char *text, int len, int active)
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{
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struct nk_window *win;
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struct nk_panel *layout;
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const struct nk_input *in;
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const struct nk_style *style;
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struct nk_rect bounds;
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enum nk_widget_layout_states state;
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NK_ASSERT(ctx);
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NK_ASSERT(ctx->current);
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NK_ASSERT(ctx->current->layout);
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if (!ctx || !ctx->current || !ctx->current->layout)
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return active;
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win = ctx->current;
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style = &ctx->style;
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layout = win->layout;
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state = nk_widget(&bounds, ctx);
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if (!state) return active;
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in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input;
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nk_do_toggle(&ctx->last_widget_state, &win->buffer, bounds, &active,
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text, len, NK_TOGGLE_CHECK, &style->checkbox, in, style->font);
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return active;
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}
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NK_API unsigned int
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nk_check_flags_text(struct nk_context *ctx, const char *text, int len,
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unsigned int flags, unsigned int value)
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{
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int old_active;
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NK_ASSERT(ctx);
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NK_ASSERT(text);
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if (!ctx || !text) return flags;
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old_active = (int)((flags & value) & value);
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if (nk_check_text(ctx, text, len, old_active))
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flags |= value;
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else flags &= ~value;
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return flags;
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}
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NK_API int
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nk_checkbox_text(struct nk_context *ctx, const char *text, int len, int *active)
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{
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int old_val;
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NK_ASSERT(ctx);
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NK_ASSERT(text);
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NK_ASSERT(active);
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if (!ctx || !text || !active) return 0;
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old_val = *active;
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*active = nk_check_text(ctx, text, len, *active);
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return old_val != *active;
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}
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NK_API int
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nk_checkbox_flags_text(struct nk_context *ctx, const char *text, int len,
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unsigned int *flags, unsigned int value)
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{
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int active;
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NK_ASSERT(ctx);
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NK_ASSERT(text);
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NK_ASSERT(flags);
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if (!ctx || !text || !flags) return 0;
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active = (int)((*flags & value) & value);
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if (nk_checkbox_text(ctx, text, len, &active)) {
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if (active) *flags |= value;
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else *flags &= ~value;
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return 1;
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}
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return 0;
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}
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NK_API int nk_check_label(struct nk_context *ctx, const char *label, int active)
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{
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return nk_check_text(ctx, label, nk_strlen(label), active);
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}
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NK_API unsigned int nk_check_flags_label(struct nk_context *ctx, const char *label,
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unsigned int flags, unsigned int value)
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{
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return nk_check_flags_text(ctx, label, nk_strlen(label), flags, value);
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}
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NK_API int nk_checkbox_label(struct nk_context *ctx, const char *label, int *active)
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{
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return nk_checkbox_text(ctx, label, nk_strlen(label), active);
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}
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NK_API int nk_checkbox_flags_label(struct nk_context *ctx, const char *label,
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unsigned int *flags, unsigned int value)
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{
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return nk_checkbox_flags_text(ctx, label, nk_strlen(label), flags, value);
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}
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/*----------------------------------------------------------------
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*
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* OPTION
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*
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* --------------------------------------------------------------*/
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NK_API int
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nk_option_text(struct nk_context *ctx, const char *text, int len, int is_active)
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{
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struct nk_window *win;
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struct nk_panel *layout;
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const struct nk_input *in;
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const struct nk_style *style;
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struct nk_rect bounds;
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enum nk_widget_layout_states state;
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NK_ASSERT(ctx);
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NK_ASSERT(ctx->current);
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NK_ASSERT(ctx->current->layout);
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if (!ctx || !ctx->current || !ctx->current->layout)
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return is_active;
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win = ctx->current;
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style = &ctx->style;
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layout = win->layout;
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state = nk_widget(&bounds, ctx);
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if (!state) return (int)state;
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in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input;
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nk_do_toggle(&ctx->last_widget_state, &win->buffer, bounds, &is_active,
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text, len, NK_TOGGLE_OPTION, &style->option, in, style->font);
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return is_active;
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}
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NK_API int
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nk_radio_text(struct nk_context *ctx, const char *text, int len, int *active)
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{
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int old_value;
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NK_ASSERT(ctx);
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NK_ASSERT(text);
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NK_ASSERT(active);
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if (!ctx || !text || !active) return 0;
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old_value = *active;
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*active = nk_option_text(ctx, text, len, old_value);
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return old_value != *active;
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}
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NK_API int
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nk_option_label(struct nk_context *ctx, const char *label, int active)
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{
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return nk_option_text(ctx, label, nk_strlen(label), active);
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}
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NK_API int
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nk_radio_label(struct nk_context *ctx, const char *label, int *active)
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{
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return nk_radio_text(ctx, label, nk_strlen(label), active);
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}
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