This section describes chalk's toolbars. By default, the Chalk toolbar is located to the left of the drawing area, while the others can be found at the top, below the menu bar.
You can customize your toolbars by choosing -> or by clicking with the mouse button on a toolbar and choosing .
The File toolbar
This toolbar contains actions for working with files. In chalk's default, there are five buttons on this toolbar: New, Open, Save, Print Preview, and Print.
These actions all correspond to entries in the menu.
The Edit toolbar
This toolbar contains editing actions. With default settings this toolbar offers four buttons: Undo, Redo, Cut, and Copy.
These actions all correspond to entries in the menu.
The Navigation toolbar
This toolbar offers easy access to navigation actions. The two default actions available are Zoom In and Zoom Out. With Zoom In, the zoom level is increased. You will see less, but in higher detail. With Zoom Out, the zoom level is decreased, so that you see more at less detail.
The Chalk toolbar
This toolbar contains painting operations and tools, as well as editing and selecting tools. The available actions and some controls are listed below. You can change the behaviour of most tools (and with that, usually the resulting effect) by setting their options.
With this tool you can paint freely. Click the
mouse button to paint a single instance of the currently selected brush, or hold the mouse button and drag your mouse around to paint. The mouse movements you make are directly used for painting.This tool is used to draw lines. Click the
mouse button to indicate the first endpoint, keep the button pressed, drag to the second endpoint and release the button.Use Shift while holding the mouse button to restrict drawing to only horizontal or vertical lines. You can press Alt while still keeping the mouse button down to move the line to a different location.
This tool can be used to paint rectangles. Click and hold the
mouse button to indicate one corner of the rectangle, drag to the opposite corner, and release the button.If you hold Shift while drawing, a square will be drawn instead of a rectangle. Holding Ctrl will change the way the rectangle is constructed. Normally, the first mouse click indicates one corner and the second click the opposite. With Ctrl, the initial mouse position indicates the center of the rectangle, and the final mouse position indicates a corner. You can press Alt while still keeping the mouse button down to move the rectangle to a different location.
You can change between the corner/corner and center/corner drawing methods as often as you want by pressing or releasing Ctrl, provided that you keep the mouse button pressed. With Ctrl pressed, mouse movements will affect all four corners of the rectangle (relative to the center), without Ctrl, one of the corners is unaffected.
Use this tool to paint an ellipse. The currently selected brush is used for drawing the ellipse outline. Click and hold the bounding rectangle” of the ellipse, then move your mouse to the opposite corner. chalk will show a preview of the ellipse using a thin line. Release the button to draw the ellipse.
mouse button to indicate one corner of the “If you hold Shift while drawing, a circle will be drawn instead of an ellipse. Holding Ctrl will change the way the ellipse is constructed: instead of two corners, the initial mouse position indicates the ellipse center, and the final mouse position indicates one of the corners of the bounding rectangle. You can press Alt while still keeping the mouse button down to move the ellipse to a different location.
You can change between the corner/corner and center/corner drawing methods as often as you want by pressing or releasing Ctrl, provided that you keep the mouse button pressed. With Ctrl pressed, mouse movements will affect all four corners of the bounding rectangle (relative to the center), without Ctrl, the corner opposite to the one you are moving remains still.
With this tool you can draw polygons. Click the Enter to connect the last vertex to the starting point.
mouse button to indicate the starting point and successive vertices, then double-click or pressPolylines are drawn like polygons, with the difference that the double-click indicating the end of the polyline does not connect the last vertex to the first one.
This tool creates star-shaped objects. Press the
mouse button to indicate the center, and drag the mouse to change the size and rotation of the star.You can press Alt while still keeping the mouse button down to move the star to a different location.
You can draw Bezier curves by using this tool. Click the
mouse button to indicate the starting point of the curve, then click again for consecutive control points of the curve.
Drawing a Bezier curve
chalk will show a blue line with two handles when you add a control point. You can drag these handles to change the direction of the curve in that point.
Modifying a Bezier curve
You can click on a previously inserted control point to modify it. With an intermediate control point (that is, a point that is not the starting point and not the ending point), you can move the direction handles seperately to have the curve enter and leave the point in different directions. After editing a point, you can just click on the canvas to continue adding points to the curve.
Pressing Delete will remove the currently selected control point from the curve. Double-click the mouse button on any point of the curve or press Enter to finish drawing, or press Esc to cancel the entire curve. You can use Ctrl while keeping the mouse button pressed to move the entire curve to a different position.
A finished Bezier curve
You can use this tool to duplicate parts of an image. Press Shift and click with the mouse button on the location you want to duplicate from. chalk will indicate this location by an outline of your current brush. Then click with the mouse button to designate the location where you want to duplicate to, and drag with the mouse. You will then duplicate whatever is at the source location to the current (destination) location.
While you are painting the duplicate, both your cursor in the destination location and the brush outline in the source location will move, in order to give you visual feedback.
You can also use this tool to correct colors in a part of the image: use the Healing option for that.
This tool allows you to pick a filter and draw with it. The image below shows the effect of using a large circular brush and painting with, from left to right, the Maximize Channel, Minimize Channel, Invert, and Desaturate filters.
Painting with filters
With this tool you can crop a layer or an image to a certain rectangular area. Click and drag with the
mouse button to define an area. This area is designated by an outline with 8 handles. You can then use the handles to change the size of the area which the image or layer is to be cropped to. You can also click and drag inside the area to move the outline in its entirety.Double-click outside the area (i.e. on a part of the image that is to be removed) to confirm the cropping operation.
With this tool, you can move the current layer or selection by dragging the mouse.
With this tool you can quickly transform the current selection or layer. Handles will appear at the corners and sides, with which you can resize the selection or layer. You can perform rotations by moving the mouse above or to the left of the handles and dragging it. You can also click anywhere inside the selection or layer and move it by dragging the mouse.
This tool allows you to change the perspective of an image. Designate the area which should become the new image by clicking at its top-left, top-right, bottom-right and bottom-left corners. The area given by these four corners will then be transformed so that the given corners become the corners of the actual image.
Use this tool to fill a contiguous area of one color with the current foreground color or a pattern. Simply click to fill up the area.
This tool fills the current layer or selection with the currently selected gradient. Click the
mouse button, hold it, and drag the mouse to define two endpoints. The gradient will be drawn along this line. If the line does not extend to the border of the selection or layer, the color at the corresponding endpoint of the gradient will be used to fill up the rest of the area at that side.With this tool you can add simple text to your image. Click the
mouse button on the location at which you want have the text. Then enter the desired text in the dialog window that appears. The text will be horizontally centered on, and the top of the text will be at the same height as, the chosen location.With this tool you can find the color values of a point. Click the Control box.
mouse button somewhere in the image to see color information about that point in theThis tool can be used to navigate through your image. Click and hold the
mouse button and move the mouse to scroll in a certain direction.Use this tool to zoom in and out. Click the
mouse button to increase the zoom by a factor 2 (e.g. 1:1 to 2:1), click the mouse button to decrease the zoom by a factor 2 (e.g. 1:1 to 1:2).You can create and edit a perspective grid with this tool. Click the
mouse button and drag the mouse to indicate the first two corners of the grid, then click for the third and fourth corners. The outline of the grid is now shown and you can edit it if you are not completely happy. When you switch to a different tool, the perspective grid will be subdivided and shown as thin gray lines.If you only see three corners instead of four, you probably clicked instead of dragging initially. In this case you can still click the handle of your now combined first and second corners and drag it to get four separate corners.
Clicking the Perspective Grid tool again later will allow you to modify the grid. You can hide or remove the grid by choosing the or options from the menu.
This tool can be used to select custom areas. The currently selected brush is used to select areas: instead of painting on the image, the area is selected. For more information on selections, see the Selections chapter.
This tool works almost the same as the Paint Selection tool, but a selection, if it exists at the mouse location, is removed instead of created.
You can use this tool to select rectangular areas. Operation is similar to the Rectangle tool, and Shift, Ctrl and Alt can be used like when painting rectangles.
You can use this tool to select elliptical areas. Operation is similar to the Ellipse tool, and Shift, Ctrl and Alt can be used like when painting ellipses.
You can use this tool to select polygonal areas. Operation is similar to the Polygon tool, and Shift, Ctrl and Alt can be used like when painting polygons.
You can use this tool to select custom outlined areas. Click the Brush tool, to define the outline. When you release the mouse button, the outline will be finished with a straight line between the current position and the start position.
mouse button and drag with your mouse, like when painting with theWith this tool you can select contiguous areas of a color. Click with the
mouse button to select an area.With this tool you can select multiple areas with the same color. Detection is done the same as with the contiguous fill, but the areas do not need to be adjacent.
With this tool you can easily select a visually distinct area. Click with the
mouse button and move the mouse around the area that you want to select. If the area has a well enough defined boundary, the selection will be drawn nicely around it. You will see a number of control points appear, which connect the various parts of the selection boundary.If you want more control over the area that is selected, press Ctrl to switch to manual mode. You will now have to click for each control point. In manual mode, you can also move control points by clicking on them with the mouse button and dragging with the mouse.
When you want to return to automatic mode, simply press Ctrl again. You can switch between these two modes as often as you like.
With this tool you can select an area by drawing a Bezier outline. See the description of the Bezier tool for details.
The Brushes and Stuff toolbar
This toolbar contains dropdown “palettes” in which you can choose brush shapes, gradients, and fill patterns. It also contains a dropdown box for painter's tools, and a tablet pressure setting.
The Brush Shapes palette
In the Brush Shapes palette, you can choose which brush to paint with. This brush is used for painting operations like Freehand, Rectangle, Ellipse, etcetera. You can choose a predefined brush (in the Predefined Brushes tab, shown above), or customize or create one.
The Brush Shapes palette with the Autobrush tab
The Autobrush tab allows you to create a customized rectangular or ellipsoid brush. You can set its height and width using the Size spin boxes. The link icon controls whether the height and width are forced to be the same or not. If a connected link picture is shown, changing one value will automatically change the other one as well. A disconnected link indicates that both values can be set independently. The fuzziness of the brush can be set with the Fade spin boxes. Again, horizontal and vertical values can be allowed to differ or not, depending on the state of the link button.
The Brush Shapes palette with the Custom Brush tab
The Custom Brush tab of this palette lets you use the current image as a brush. With the button, you can save it for later use.
The Gradients palette
In the Gradients palette, you can choose a gradient to paint with using the Gradient tool. Clicking once on a gradient in the palette will show a larger preview. Click it again to make it the current gradient.
You can create your own gradients with the button.
The Patterns palette
The Patterns palette allows you to choose a pattern for operations like Pattern fill. Click a pattern to see a preview at actual size, then click it again to select it.
The Patterns palette with the Custom Pattern tab selected
You can also create a custom pattern, as is shown above.
With the Painter's tools dropdown box, you can select the tool your painting operation should simulate. For example, you can paint with a normal brush, an airbrush, or a filter.
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