Duncan McIntyre / SimpleGUI

Foundation classes for a basic GUI implementing simple widgets and events

Dependents:   TouchScreenGUIDemo

Widgets/ContainerWidget.h@5:b7ce5721a0b5, 2016-03-28 (annotated)

Committer:
duncanFrance
Date:
Mon Mar 28 10:47:39 2016 +0000
Revision:
5:b7ce5721a0b5
Child:
7:303850a4b30c
Added BitmapWidget

Who changed what in which revision?

UserRevisionLine numberNew contents of line
duncanFrance 5:b7ce5721a0b5 1 #ifndef SIMPLEGUI_CONTAINER_WIDGET_H
duncanFrance 5:b7ce5721a0b5 2 #define SIMPLEGUI_CONTAINER_WIDGET_H
duncanFrance 5:b7ce5721a0b5 3
duncanFrance 5:b7ce5721a0b5 4 #include "Widget.h"
duncanFrance 5:b7ce5721a0b5 5
duncanFrance 5:b7ce5721a0b5 6 class WidgetList
duncanFrance 5:b7ce5721a0b5 7 {
duncanFrance 5:b7ce5721a0b5 8
duncanFrance 5:b7ce5721a0b5 9 public:
duncanFrance 5:b7ce5721a0b5 10
duncanFrance 5:b7ce5721a0b5 11 WidgetList(Widget* w) : widget(w), next(NULL) {}
duncanFrance 5:b7ce5721a0b5 12
duncanFrance 5:b7ce5721a0b5 13 Widget* widget;
duncanFrance 5:b7ce5721a0b5 14 WidgetList* next;
duncanFrance 5:b7ce5721a0b5 15
duncanFrance 5:b7ce5721a0b5 16 };
duncanFrance 5:b7ce5721a0b5 17
duncanFrance 5:b7ce5721a0b5 18 /**
duncanFrance 5:b7ce5721a0b5 19 * Simple container hold widgets side-by-side and draws a border
duncanFrance 5:b7ce5721a0b5 20 * It will expand as needed to hold the widgets
duncanFrance 5:b7ce5721a0b5 21 **/
duncanFrance 5:b7ce5721a0b5 22 class ContainerWidget : public Widget
duncanFrance 5:b7ce5721a0b5 23 {
duncanFrance 5:b7ce5721a0b5 24
duncanFrance 5:b7ce5721a0b5 25 public:
duncanFrance 5:b7ce5721a0b5 26
duncanFrance 5:b7ce5721a0b5 27 ContainerWidget(GraphicsDisplay* display) : Widget(display), _padding(0), _widgets(NULL) {
duncanFrance 5:b7ce5721a0b5 28 }
duncanFrance 5:b7ce5721a0b5 29
duncanFrance 5:b7ce5721a0b5 30 /**
duncanFrance 5:b7ce5721a0b5 31 * Set the amount of padding between the border and a widget edge
duncanFrance 5:b7ce5721a0b5 32 **/
duncanFrance 5:b7ce5721a0b5 33 void setPadding(int pixels) {
duncanFrance 5:b7ce5721a0b5 34 if(_padding != pixels) {
duncanFrance 5:b7ce5721a0b5 35 _padding = pixels;
duncanFrance 5:b7ce5721a0b5 36 adjust();
duncanFrance 5:b7ce5721a0b5 37 }
duncanFrance 5:b7ce5721a0b5 38 }
duncanFrance 5:b7ce5721a0b5 39
duncanFrance 5:b7ce5721a0b5 40 void setBorder(int width, uint16_t colour) {
duncanFrance 5:b7ce5721a0b5 41 _borderColour = colour;
duncanFrance 5:b7ce5721a0b5 42 if(_borderWidth != width) {
duncanFrance 5:b7ce5721a0b5 43 _borderWidth = width;
duncanFrance 5:b7ce5721a0b5 44 adjust();
duncanFrance 5:b7ce5721a0b5 45 }
duncanFrance 5:b7ce5721a0b5 46 }
duncanFrance 5:b7ce5721a0b5 47
duncanFrance 5:b7ce5721a0b5 48 void append(Widget* widget) {
duncanFrance 5:b7ce5721a0b5 49
duncanFrance 5:b7ce5721a0b5 50 WidgetList* w = new WidgetList(widget);
duncanFrance 5:b7ce5721a0b5 51
duncanFrance 5:b7ce5721a0b5 52 if(_widgets == NULL) {
duncanFrance 5:b7ce5721a0b5 53 _widgets = w;
duncanFrance 5:b7ce5721a0b5 54 } else {
duncanFrance 5:b7ce5721a0b5 55 _widgets->next = w;
duncanFrance 5:b7ce5721a0b5 56 }
duncanFrance 5:b7ce5721a0b5 57
duncanFrance 5:b7ce5721a0b5 58 adjust();
duncanFrance 5:b7ce5721a0b5 59 }
duncanFrance 5:b7ce5721a0b5 60
duncanFrance 5:b7ce5721a0b5 61 virtual void setLocation(int x, int y) {
duncanFrance 5:b7ce5721a0b5 62 Widget::setLocation(x,y);
duncanFrance 5:b7ce5721a0b5 63 adjust();
duncanFrance 5:b7ce5721a0b5 64 }
duncanFrance 5:b7ce5721a0b5 65
duncanFrance 5:b7ce5721a0b5 66 virtual void setSize(int width, int height) {
duncanFrance 5:b7ce5721a0b5 67 Widget::setSize(width, height);
duncanFrance 5:b7ce5721a0b5 68 _minWidth = width;
duncanFrance 5:b7ce5721a0b5 69 _minHeight = height;
duncanFrance 5:b7ce5721a0b5 70 adjust();
duncanFrance 5:b7ce5721a0b5 71 }
duncanFrance 5:b7ce5721a0b5 72
duncanFrance 5:b7ce5721a0b5 73 virtual void adjust() {
duncanFrance 5:b7ce5721a0b5 74 int wx = _x + _padding + _borderWidth;
duncanFrance 5:b7ce5721a0b5 75 int wy = _y + _padding + _borderWidth;
duncanFrance 5:b7ce5721a0b5 76 int h = 0;
duncanFrance 5:b7ce5721a0b5 77
duncanFrance 5:b7ce5721a0b5 78 _width = _minWidth;
duncanFrance 5:b7ce5721a0b5 79 _height = _minHeight;
duncanFrance 5:b7ce5721a0b5 80
duncanFrance 5:b7ce5721a0b5 81 WidgetList* p = _widgets;
duncanFrance 5:b7ce5721a0b5 82 while(p != NULL) {
duncanFrance 5:b7ce5721a0b5 83 // Position the widget
duncanFrance 5:b7ce5721a0b5 84 p->widget->setLocation(wx, wy);
duncanFrance 5:b7ce5721a0b5 85 wx += p->widget->width();
duncanFrance 5:b7ce5721a0b5 86 if(p->widget->height() > h) {
duncanFrance 5:b7ce5721a0b5 87 h = p->widget->height();
duncanFrance 5:b7ce5721a0b5 88 }
duncanFrance 5:b7ce5721a0b5 89
duncanFrance 5:b7ce5721a0b5 90 p = p->next;
duncanFrance 5:b7ce5721a0b5 91 }
duncanFrance 5:b7ce5721a0b5 92
duncanFrance 5:b7ce5721a0b5 93 int neededWidth = _padding + _borderWidth + wx - _x;
duncanFrance 5:b7ce5721a0b5 94 int neededHeight = 2 * (_padding + _borderWidth) + h;
duncanFrance 5:b7ce5721a0b5 95
duncanFrance 5:b7ce5721a0b5 96 if(neededWidth > _width) {
duncanFrance 5:b7ce5721a0b5 97 _width = neededWidth;
duncanFrance 5:b7ce5721a0b5 98 }
duncanFrance 5:b7ce5721a0b5 99
duncanFrance 5:b7ce5721a0b5 100 if(neededHeight > _height) {
duncanFrance 5:b7ce5721a0b5 101 _height = neededHeight;
duncanFrance 5:b7ce5721a0b5 102 }
duncanFrance 5:b7ce5721a0b5 103 }
duncanFrance 5:b7ce5721a0b5 104
duncanFrance 5:b7ce5721a0b5 105 virtual void draw() {
duncanFrance 5:b7ce5721a0b5 106 // Draw the border
duncanFrance 5:b7ce5721a0b5 107 // Top
duncanFrance 5:b7ce5721a0b5 108 _display->fillrect(_x, _y, _x+_width, _y+_borderWidth, _borderColour);
duncanFrance 5:b7ce5721a0b5 109 // Bottom
duncanFrance 5:b7ce5721a0b5 110 _display->fillrect(_x, _y + _height - _borderWidth, _x + _width, _y+_height, _borderColour);
duncanFrance 5:b7ce5721a0b5 111 // Left
duncanFrance 5:b7ce5721a0b5 112 _display->fillrect(_x, _y, _x+_borderWidth, _y+_height, _borderColour);
duncanFrance 5:b7ce5721a0b5 113 // Right
duncanFrance 5:b7ce5721a0b5 114 _display->fillrect(_x+_width-_borderWidth, _y, _x+_width, _y+_height, _borderColour);
duncanFrance 5:b7ce5721a0b5 115
duncanFrance 5:b7ce5721a0b5 116 WidgetList* p = _widgets;
duncanFrance 5:b7ce5721a0b5 117 while(p != NULL) {
duncanFrance 5:b7ce5721a0b5 118 p->widget->draw();
duncanFrance 5:b7ce5721a0b5 119 p = p->next;
duncanFrance 5:b7ce5721a0b5 120 }
duncanFrance 5:b7ce5721a0b5 121 }
duncanFrance 5:b7ce5721a0b5 122
duncanFrance 5:b7ce5721a0b5 123
duncanFrance 5:b7ce5721a0b5 124 protected:
duncanFrance 5:b7ce5721a0b5 125
duncanFrance 5:b7ce5721a0b5 126 int _padding;
duncanFrance 5:b7ce5721a0b5 127 WidgetList* _widgets;
duncanFrance 5:b7ce5721a0b5 128 int _minWidth, _minHeight;
duncanFrance 5:b7ce5721a0b5 129 int _borderWidth;
duncanFrance 5:b7ce5721a0b5 130 uint16_t _borderColour;
duncanFrance 5:b7ce5721a0b5 131 };
duncanFrance 5:b7ce5721a0b5 132
duncanFrance 5:b7ce5721a0b5 133 #endif