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Improved mouse button handling and Button widget added.

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This commit is contained in:
Scott Duensing 2022-06-29 18:02:08 -05:00
parent a8168cd253
commit 33fd278e1d
2 changed files with 185 additions and 0 deletions
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134
roo-e/src/gui/widgets/button.c Normal file
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/*
* Roo/E, the Kangaroo Punch Portable GUI Toolkit
* Copyright (C) 2022 Scott Duensing
*
* http://kangaroopunch.com
*
*
* This file is part of Roo/E.
*
* Roo/E is free software: you can redistribute it and/or modify it under the
* terms of the GNU Affero General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* Roo/E is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Roo/E. If not, see <https://www.gnu.org/licenses/>.
*
*/
#include "../wmwindow.h"
#include "button.h"
uint8_t __MAGIC_BUTTON = 0;
static void buttonClick(WidgetT *widget, uint16_t x, uint16_t y, uint8_t event, void *data);
static void buttonDestroy(struct WidgetS *widget, ...);
static void buttonPaint(struct WidgetS *widget, ...);
static void buttonClick(WidgetT *widget, uint16_t x, uint16_t y, uint8_t event, void *data) {
ButtonT *b = (ButtonT *)widget;
switch (event) {
case CLICK_LEFT_DOWN:
b->isPressed = 1;
break;
case CLICK_LEFT_UP:
b->isPressed = 0;
// Call the actual click event.
b->handler(widget, x, y, event, data);
break;
case CLICK_LEFT_CANCEL:
b->isPressed = 0;
break;
}
guiWidgetDirtySet(widget, 1);
}
void buttonClickSet(ButtonT *button, ClickHandlerT handler, void *data) {
button->handler = handler;
button->base.data = data;
}
ButtonT *buttonCreate(char *label, ClickHandlerT handler, void *data, ...) {
ButtonT *b = NULL;
uint16_t width;
uint16_t height;
FontT *f = __guiFontVGA8x16;
NEW(ButtonT, b);
memset(b, 0, sizeof(ButtonT));
b->offset.x = 8; // 8 = two border, 6 padding.
b->offset.y = 4; // 4 = two border, two padding.
b->label = labelCreate(LABEL_ALIGN_LEFT, f, label);
if (!b->label) {
DEL(b);
return NULL;
}
width = fontWidthCharactersGet(label) * fontWidthGet(f) + (b->offset.x * 2);
height = fontHeightGet(f) + (b->offset.y * 2);
guiWidgetBaseSet(W(b), __MAGIC_BUTTON, width, height);
buttonClickSet(b, handler, data);
return b;
}
static void buttonDestroy(struct WidgetS *widget, ...) {
ButtonT *b = (ButtonT *)widget;
guiWidgetDestroy(W(b->label));
DEL(b);
}
static void buttonPaint(struct WidgetS *widget, ...) {
ButtonT *b = (ButtonT *)widget;
ColorT h = b->isPressed ? GUI_BLACK : GUI_WHITE;
ColorT s = b->isPressed ? GUI_WHITE : GUI_BLACK;
if (guiWidgetDirtyGet(widget)) {
guiWidgetDirtySet(widget, 0);
// Paint button.
surfaceBoxHighlight(b->base.r.x, b->base.r.y, b->base.r.x + b->base.r.x2 - 1, b->base.r.y + b->base.r.y2 - 1, h, s);
surfaceBoxHighlight(b->base.r.x + 1, b->base.r.y + 1, b->base.r.x + b->base.r.x2 - 2, b->base.r.y + b->base.r.y2 - 2, h, s);
surfaceBoxFilled(b->base.r.x + 2, b->base.r.y + 2, b->base.r.x + b->base.r.x2 - 3, b->base.r.y + b->base.r.y2 - 3, GUI_LIGHTGRAY);
// Paint label.
guiWidgetPaintManually(W(b->label), b->base.r.x + b->offset.x + b->isPressed, b->base.r.y + b->offset.y + b->isPressed);
}
}
RegisterT *buttonRegister(uint8_t magic) {
static RegisterT reg = {
"Button",
buttonClick,
buttonDestroy,
buttonPaint,
NULL // No unregister handler.
};
// One-time widget startup code.
__MAGIC_BUTTON = magic;
return &reg;
}

51
roo-e/src/gui/widgets/button.h Normal file
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/*
* Roo/E, the Kangaroo Punch Portable GUI Toolkit
* Copyright (C) 2022 Scott Duensing
*
* http://kangaroopunch.com
*
*
* This file is part of Roo/E.
*
* Roo/E is free software: you can redistribute it and/or modify it under the
* terms of the GNU Affero General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* Roo/E is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Roo/E. If not, see <https://www.gnu.org/licenses/>.
*
*/
#ifndef BUTTON_H
#define BUTTON_H
#include "../gui.h"
#include "label.h"
typedef struct ButtonS {
WidgetT base; // Required by all widgets.
LabelT *label; // Label to display text.
PointT offset; // Offset of label in button.
ClickHandlerT handler; // Actual event handler.
uint8_t isPressed; // Is the button being pressed?
} ButtonT;
extern uint8_t __MAGIC_BUTTON; // Magic ID assigned to us from the GUI.
void buttonClickSet(ButtonT *button, ClickHandlerT handler, void *data);
ButtonT *buttonCreate(char *label, ClickHandlerT handler, void *data, ...);
RegisterT *buttonRegister(uint8_t magic);
#endif // BUTTON_H