Aurélien Gâteau

Colorpick

written on Wednesday, November 26, 2014

Recently I wrote about my so-called "lightweight project management policy". I am going to start slowly and present a small side-project: Colorpick.

Colorpick is a color picker and contrast checker. I originally wrote it to help me check and fix the background and foreground colors of the Oxygen palette to ensure text was readable. Since then I have been using it to steal colors from various places and as a magnifier to inspect tiny details.

The main window looks like this:

Main Window

Admittedly, it's a bit ugly, especially the RGB gradients (KGradientSelector and the Oxygen style do not play well together). Nevertheless, it does the job, which is what side-projects are all about.

Here is an annotated image of the window:

Annotated Window

  1. The current color: clicking it brings the standard KDE color dialog. The main reason it's here is because it can be dragged: drag the color and drop on any application which supports color.

  2. The color in hexadecimal.

  3. Luminance buttons: click them to adjust the luminance of the color.

  4. Color picker: brings the magnifier to pick a color from the screen. One nice thing about this magnifier is that it can be controlled from the keyboard: roughly move the mouse to the area where you want to pick a color then position the picker precisely using the arrow keys. When the position is OK: press Enter to pick the color. Pressing Escape or right-clicking closes the magnifier.

    Magnifier

    Picking the color of the 1-pixel door knob from the home icon. The little inverted-color square in the center shows which pixel is being picked.

  5. Copy button: clicking this button brings a menu with the color expressed in different formats. Selecting one entry copies the color to the clipboard, ready to be pasted.

    Copy menu

  6. RGB sliders: not much to say here. Drag the cursors or enter values, your choice.

  7. Contrast test text: shows some demo text using the selected background and foreground colors, together with the current contrast value. It lets you know if your contrast is good enough according to http://www.w3.org/TR/WCAG20/#visual-audio-contrast.

Interested? The project is on GitHub at https://github.com/agateau/colorpick. Get it with git clone https://github.com/agateau/colorpick then follow the instructions from the INSTALL.md file.

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This post was tagged colorpick, kde and side-projects
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