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MouseButton1 Set MouseButton2 Invert MouseButton3 Clear MouseButton4 Clear MouseButton5 Clear
This default behavior can be changed by setting the button function resources. Here is an example:
bitmap*button1Function: Set bitmap*button2Function: Clear bitmap*button3Function: Invert etc.
The button function applies to all drawing commands, including copying, moving and pasting, flood filling, and setting the hot spot.
DRAWING COMMANDS
Here is the list of drawing commands accessible through the buttons at the left side of the application's window. Some commands can be aborted by pressing A inside the bitmap window, allowing the user to select different guiding points where applicable.
| Clear | This command clears all bits in the bitmap image. The grid squares will be set to the background color. Pressing C inside the bitmap window has the same effect. |
| Set | This command sets all bits in the bitmap image. The grid squares will be set to the foreground color. Pressing S inside the bitmap window has the same effect. |
| Invert | This command inverts all bits in the bitmap image. The grid squares will be inverted appropriately. Pressing I inside the bitmap window has the same effect. |
| Mark | This command is used to mark an area of the grid by dragging out a rectangular shape in the highlighting color. After the area is marked, it can be operated on by a number of commands (see Up, Down, Left, Right, Rotate, Flip, Cut, and so on). Only one marked area can be present at any time. If you attempt to mark another area, the old mark will vanish. The same effect can be achieved by pressing Shift-MouseButton1 and dragging out a rectangle in the grid window. Pressing Shift-MouseButton2 will mark the entire grid area. |
| Unmark | This command will cause the marked area to vanish. The same effect can be achieved by pressing Shift-MouseButton3. |
| Copy | This command is used to copy an area of the grid from one location to another. If there is no marked grid area displayed, Copy behaves just like Mark. Once there is a marked grid area displayed in the highlighting color, this command has two alternative behaviors. If you click a mouse button inside the marked area, you will be able to drag the rectangle that represents the marked area to the desired location. After you release the mouse button, the area will be copied. If you click outside the marked area, Copy will assume that you wish to mark a different region of the bitmap image, thus it will behave like Mark again. |
| Move | This command is used to move an area of the grid from one location to another. Its behavior resembles the behavior of Copy command, except that the marked area will be moved instead of copied. |
| Flip Horizontally | This command will flip the bitmap image with respect to the horizontal axes. If a marked area of the grid is highlighted, it will operate only inside the marked area. Pressing H inside the bitmap window has the same effect. |
| Up | This command moves the bitmap image one pixel up. If a marked area of the grid is highlighted, it will operate only inside the marked area. Pressing UpArrow inside the bitmap window has the same effect. |