Mercurial > molko
view libmlk-ui/mlk/ui/button.c @ 591:bca466732620
misc: update .hgignore
author | David Demelier <markand@malikania.fr> |
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date | Mon, 20 Mar 2023 21:12:15 +0100 |
parents | 95792046d3d2 |
children | ed1d3244ed57 |
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/* * button.c -- GUI button * * Copyright (c) 2020-2023 David Demelier <markand@malikania.fr> * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <assert.h> #include <string.h> #include <mlk/core/event.h> #include <mlk/core/maths.h> #include <mlk/core/painter.h> #include <mlk/core/trace.h> #include "align.h" #include "button.h" #include "ui.h" #include "ui_p.h" static inline int is_boxed(const struct mlk_button *button, const struct mlk_event_click *click) { assert(button); assert(click); assert(click->type == MLK_EVENT_CLICKDOWN || click->type == MLK_EVENT_CLICKUP); return mlk_maths_is_boxed(click->x, click->y, button->x, button->y, button->w, button->h); } static inline struct mlk_font * style_font(const struct mlk_button *button) { const struct mlk_button_style *style = MLK__STYLE(button, mlk_button_style); if (style->text_font) return style->text_font; return mlk_ui_fonts[MLK_UI_FONT_INTERFACE]; } static void delegate_draw_frame(struct mlk_button_delegate *delegate, const struct mlk_button *button) { (void)delegate; const struct mlk_button_style *style = MLK__STYLE(button, mlk_button_style); unsigned long long border_color, bg_color; if (button->pressed) { bg_color = style->pressed_bg_color; border_color = style->pressed_border_color; } else { bg_color = style->bg_color; border_color = style->border_color; } mlk_painter_set_color(border_color); mlk_painter_draw_rectangle(button->x, button->y, button->w, button->h); mlk_painter_set_color(bg_color); mlk_painter_draw_rectangle( button->x + style->border_size, button->y + style->border_size, button->w - (style->border_size * 2), button->h - (style->border_size * 2) ); } static void delegate_draw_text(struct mlk_button_delegate *delegate, const struct mlk_button *button) { (void)delegate; const struct mlk_button_style *style = MLK__STYLE(button, mlk_button_style); unsigned long long text_color; if (button->pressed) text_color = style->pressed_text_color; else text_color = style->text_color; mlk_ui_draw_text( MLK_ALIGN_CENTER, style_font(button), text_color, button->text, button->x, button->y, button->w, button->h ); } struct mlk_button_style mlk_button_style = { .bg_color = MLK_UI_COLOR_BG, .pressed_bg_color = 0xcdd2daff, .border_color = MLK_UI_COLOR_BORDER, .pressed_border_color = 0xa6aebaff, .border_size = 1, .text_color = MLK_UI_COLOR_TEXT, .pressed_text_color = MLK_UI_COLOR_TEXT }; struct mlk_button_delegate mlk_button_delegate = { .draw_frame = delegate_draw_frame, .draw_text = delegate_draw_text }; int mlk_button_ok(const struct mlk_button *button) { if (!button) return 0; if (button->text && strlen(button->text) == 0) return 0; return 1; } int mlk_button_handle(struct mlk_button *button, const union mlk_event *ev) { assert(button); assert(ev); int active = 0; switch (ev->type) { case MLK_EVENT_CLICKDOWN: if (is_boxed(button, &ev->click)) button->pressed = 1; break; case MLK_EVENT_CLICKUP: /* * If the button was pressed, indicate that the button is * finally activated. This let the user to move the cursor * outside the button to "forget" the press. */ button->pressed = 0; if (is_boxed(button, &ev->click)) active = 1; break; default: break; } return active; } void mlk_button_update(struct mlk_button *button, unsigned int ticks) { assert(button); MLK__DELEGATE_INVOKE(button->delegate, mlk_button_delegate, update, button, ticks); } void mlk_button_draw(const struct mlk_button *button) { assert(button); MLK__DELEGATE_INVOKE(button->delegate, mlk_button_delegate, draw_frame, button); if (button->text) MLK__DELEGATE_INVOKE(button->delegate, mlk_button_delegate, draw_text, button); }