Duncan McIntyre / SimpleGUI

Foundation classes for a basic GUI implementing simple widgets and events

Dependents:   TouchScreenGUIDemo

Widgets/TextWidget.cpp@16:e9a771ecfdbe, 2016-05-22 (annotated)

Committer:
duncanFrance
Date:
Sun May 22 14:40:29 2016 +0000
Revision:
16:e9a771ecfdbe
Parent:
13:6714534e7974
Child:
17:5184762fda6c
Added vertical alignment control to TextWidget; pumpEvents no longer blocks

Who changed what in which revision?

UserRevisionLine numberNew contents of line
duncanFrance 0:0a590815d51c 1 #include "TextWidget.h"
duncanFrance 0:0a590815d51c 2
duncanFrance 0:0a590815d51c 3 /**
duncanFrance 0:0a590815d51c 4 * A basic widget implementation which just draws some text.
duncanFrance 0:0a590815d51c 5 * If the text does not fit in the bounding-box it will be clipped
duncanFrance 0:0a590815d51c 6 **/
duncanFrance 12:63db16fea709 7 TextWidget::TextWidget(GraphicsContext *context) :
duncanFrance 12:63db16fea709 8 Widget(context),
duncanFrance 12:63db16fea709 9 _renderer(context->fontRenderer()),
duncanFrance 16:e9a771ecfdbe 10 _font(context->defaultFont()),
duncanFrance 16:e9a771ecfdbe 11 _halign(LEFT), _valign(TOP)
duncanFrance 8:a460cabc85ac 12 {
duncanFrance 8:a460cabc85ac 13 }
duncanFrance 8:a460cabc85ac 14
duncanFrance 12:63db16fea709 15 TextWidget::TextWidget(GraphicsContext *context, FontRenderer* renderer) :
duncanFrance 12:63db16fea709 16 Widget(context),
duncanFrance 8:a460cabc85ac 17 _renderer(renderer),
duncanFrance 16:e9a771ecfdbe 18 _font(context->defaultFont()),
duncanFrance 16:e9a771ecfdbe 19 _halign(LEFT), _valign(TOP)
duncanFrance 8:a460cabc85ac 20 {
duncanFrance 8:a460cabc85ac 21 }
duncanFrance 8:a460cabc85ac 22
duncanFrance 12:63db16fea709 23 TextWidget::TextWidget(GraphicsContext *context, FontRenderer* renderer, Font* font) :
duncanFrance 12:63db16fea709 24 Widget(context),
duncanFrance 8:a460cabc85ac 25 _renderer(renderer),
duncanFrance 16:e9a771ecfdbe 26 _font(font),
duncanFrance 16:e9a771ecfdbe 27 _halign(LEFT), _valign(TOP)
duncanFrance 7:303850a4b30c 28 {
duncanFrance 7:303850a4b30c 29 }
duncanFrance 0:0a590815d51c 30
duncanFrance 12:63db16fea709 31 void TextWidget::setText(char* text)
duncanFrance 1:48796b602c86 32 {
duncanFrance 11:b485561aa112 33 _text = text;
duncanFrance 12:63db16fea709 34 dirty();
duncanFrance 0:0a590815d51c 35 }
duncanFrance 0:0a590815d51c 36
duncanFrance 2:bb9183379488 37 void TextWidget::setFont(Font* font)
duncanFrance 1:48796b602c86 38 {
duncanFrance 2:bb9183379488 39 _font = font;
duncanFrance 12:63db16fea709 40 dirty();
duncanFrance 0:0a590815d51c 41 }
duncanFrance 0:0a590815d51c 42
duncanFrance 16:e9a771ecfdbe 43 void TextWidget::setHAlign(HAlign alignment) {
duncanFrance 16:e9a771ecfdbe 44 _halign = alignment;
duncanFrance 16:e9a771ecfdbe 45 dirty();
duncanFrance 16:e9a771ecfdbe 46 }
duncanFrance 16:e9a771ecfdbe 47
duncanFrance 16:e9a771ecfdbe 48 void TextWidget::setVAlign(VAlign alignment) {
duncanFrance 16:e9a771ecfdbe 49 _valign = alignment;
duncanFrance 16:e9a771ecfdbe 50 dirty();
duncanFrance 16:e9a771ecfdbe 51 }
duncanFrance 3:cb004f59b715 52
duncanFrance 8:a460cabc85ac 53 void TextWidget::_draw()
duncanFrance 3:cb004f59b715 54 {
duncanFrance 12:63db16fea709 55 Widget::_draw();
duncanFrance 12:63db16fea709 56
duncanFrance 16:e9a771ecfdbe 57 /******************************************************************/
duncanFrance 16:e9a771ecfdbe 58 /* --------------------------------- ^ */
duncanFrance 16:e9a771ecfdbe 59 /* | | | */
duncanFrance 16:e9a771ecfdbe 60 /* | | | */
duncanFrance 16:e9a771ecfdbe 61 /* | | inner.height */
duncanFrance 16:e9a771ecfdbe 62 /* | | | */
duncanFrance 16:e9a771ecfdbe 63 /* | | | */
duncanFrance 16:e9a771ecfdbe 64 /* | | | */
duncanFrance 16:e9a771ecfdbe 65 /* | | | */
duncanFrance 16:e9a771ecfdbe 66 /* --------------------------------- | */
duncanFrance 16:e9a771ecfdbe 67 /******************************************************************/
duncanFrance 16:e9a771ecfdbe 68 /**
duncanFrance 16:e9a771ecfdbe 69 * We need a window as high as the font with it's origin:
duncanFrance 16:e9a771ecfdbe 70 * VALIGN=TOP : (0, 0)
duncanFrance 16:e9a771ecfdbe 71 * VALIGN=MIDDLE : (0, inner.height/2 - font.height/2)
duncanFrance 16:e9a771ecfdbe 72 * VALIGN=BOTTOM : (0, inner.height - font.height)
duncanFrance 16:e9a771ecfdbe 73 **/
duncanFrance 16:e9a771ecfdbe 74 int t=0;
duncanFrance 16:e9a771ecfdbe 75 switch(_valign) {
duncanFrance 16:e9a771ecfdbe 76 case TOP: t = 0; break;
duncanFrance 16:e9a771ecfdbe 77 case MIDDLE: t = (_inner.height - _font->zoomedHeight())/2; break;
duncanFrance 16:e9a771ecfdbe 78 case BOTTOM: t = (_inner.height - _font->zoomedHeight()); break;
duncanFrance 16:e9a771ecfdbe 79 }
duncanFrance 13:6714534e7974 80
duncanFrance 16:e9a771ecfdbe 81 _renderer->window(_inner.x, _inner.y + t, _inner.width, _font->zoomedHeight(), false);
duncanFrance 7:303850a4b30c 82 _renderer->setForeground(_fg);
duncanFrance 7:303850a4b30c 83 _renderer->setBackground(_bg);
duncanFrance 12:63db16fea709 84 display()->fillrect(_inner.x, _inner.y, _inner.x+_inner.width, _inner.y+_inner.height, _bg);
duncanFrance 8:a460cabc85ac 85
duncanFrance 12:63db16fea709 86 _renderer->puts(_text, display(), _font);
duncanFrance 12:63db16fea709 87 display()->copy_to_lcd();
duncanFrance 8:a460cabc85ac 88 }