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authorWolfgang Müller2021-06-18 19:53:41 +0200
committerWolfgang Müller2021-06-19 15:53:07 +0200
commit89f8571cbcf48b7810c7027faf26ee5cf4b968b1 (patch)
treeeaf84e00488e332f52c865167290a441d27f447e /configreader.vala
parentff27c3da1266df519aa15d95cfc32ad9d0d7b5e5 (diff)
downloadweltschmerz-89f8571cbcf48b7810c7027faf26ee5cf4b968b1.tar.gz
Calculate base_width dynamically
weltschmerz sets window geometry hints to indicate how the terminal window is to be sized and resized. New sizes are always kept at a multiple of the character width and height. Effectively, this ensures that terminal windows never have "negative space" that is not used for any terminal output. In order to account for padding and non-terminal widgets, one may specify base_height and base_width. These values indicate how much space to add in a final step, after the character width and heights have been multiplied with the amount of columns and rows respectively. For example, allowed window widths are always: (char_width * N) + base_width Currently, we always use a base_width of 2 * 2. This is to account for the padding of 2 pixels as specified in terminal.css. weltschmerz uses GtkScrolledWindow and overlay scrolling by default. With overlay_scrolling enabled, the scrollbar does not take up any extra space. The previous commit works around a problem with GtkScrolledWindow and sets PolicyType.ALWAYS when overlay scrolling is turned off. This means that we now also have to account for the size of that scrollbar. Since we cannot simply query the size of the scrollbar, we have to be a bit more creative. Use the full window width and subtract the width of the terminal at startup (we know it is always 80 columns) to get the amount of space taken up by "anything else". This includes VTE padding and the scrollbar size. Importantly, this needs only be done once and is completely agnostic to any further changes to the terminal or font size (which affects the cell width and height). We only assume that both the size of the scrollbar and the amount of padding is constant, which we feel to be a reasonable trade-off.
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