A view that display a bitmap icon.
This UI widget display the bitmap contents of the Mono’s icon format. To display the icon you just provide a reference to the global variable for the icon, and a position offset.
The icon format is a bitmasps of color blending values. This means every pixel value represents a blend between to colors, the fore- and background. You set these colors specifically or uses the default system values. The technique allows icon to be semi-transparent over a background.
The default values for foreground color are the View static variable StandardBorderColor. SImialr the default background is StandardBackgroundColor
The framework contains a number of default icons each in two sizes: 16x16 and 24x24 pixels. These are distributed as part of the official SDK releases. These icons include:
alarmBell16: defined in alarm-bell-16.h
alarmBell24: defined in alarm-bell-24.h
alarmClock16: defined in alarm-clock-16.h
alarmClock24: defined in alarm-clock-24.h
clock16: defined in clock-16.h
clock24: defined in clock-24.h
cloudComputing16: defined in cloud-computing-16.h
cloudComputing24: defined in cloud-computing-24.h
mute16: defined in mute-16.h
mute24: defined in mute-24.h
pauseSymbol16: defined in pause-symbol-16.h
pauseSymbol24: defined in pause-symbol-24.h
playButton16: defined in play-button-16.h
playButton24: defined in play-button-24.h
reload16: defined in reload-16.h
reload24: defined in reload-24.h
settings16: defined in settings-16.h
settings24: defined in settings-24.h
speaker16: defined in speaker-16.h
speaker24: defined in speaker-24.h
thermometer16: defined in thermometer-16.h
thermometer24: defined in thermometer-24.h
upload16: defined in upload-16.h
upload24: defined in upload-24.h
wifiMediumSignalSymbol16: defined in wifi-medium-signal-symbol-16.h
wifiMediumSignalSymbol24: defined in wifi-medium-signal-symbol-24.h
To see the full list of available system icons, you should see the source code foler:
/include/display/iconsor on Github:
Setup an IconView with the speaker 16x16 icon:
#include <speaker-16.h> IconView icn(geo::Point(20,20), speaker); icn.show();
Creating your own icons
The tool we use to create icon objects (simple header files) are available on GitHub and converts bitmap images (like JPG and PNG) into icons files.
Contruct an empty icon view, with no icon and zero dimensions.
IconView(const geo::Point &position, const MonoIcon &icon)¶
Construct an icon view with an icon and position offset.
You provide the offset position (not the Rect) to the view and the global variable for the icon object.
The views rect (its dimensions) is calculated fro the icon you provide.
Remember: to include the header file for the icon you wish to use
The offset where the view is positioned
The reference to the global icon object
Set the foreground color for the icon.
The color to use as foreground
Set the background blending color for the icon.
The color to use as background
setIcon(const MonoIcon *icon)¶
Replace the existing icon with a new one.
Get the current foreground color.
Get the current background blening color.
Repaint the view content, using the View::painter.
Re-paint the view content. This method should be called when the view content has changed. You can call this method directly, but it might cause graphics artifacts because the display is not double buffered. Instead you should schedule a repaint by calling the scheduleRepaint() method. This method will schedule the repaint, right after the next display update.
The display system will not schedule any repaints automatically. The view does not contain any state information, so you or other classes utilizing view must schedule repaints.
In subclasses of View, this method must be overwritten.