Add the "inner_item_margin" Theme constant to the Tree control
This PR adds the "inner_item_margin" Theme constant to the Tree Control. It behaves like a horizontal padding (in CSS), but only in the active writing direction (So on LTR it'll apply a left padding and on RTL right padding). The Editor Theme has been updated to make use of this and a result items in Trees and ItemLists no longer "hugs" their border, expressing a proper spacing instead.
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5 changed files with 31 additions and 4 deletions
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<theme_item name="icon_max_width" data_type="constant" type="int" default="0">
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The maximum allowed width of the icon in item's cells. This limit is applied on top of the default size of the icon, but before the value set with [method TreeItem.set_icon_max_width]. The height is adjusted according to the icon's ratio.
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</theme_item>
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<theme_item name="inner_item_margin_bottom" data_type="constant" type="int" default="0">
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The inner bottom margin of an item.
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</theme_item>
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<theme_item name="inner_item_margin_left" data_type="constant" type="int" default="0">
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The inner left margin of an item.
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</theme_item>
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<theme_item name="inner_item_margin_right" data_type="constant" type="int" default="0">
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The inner right margin of an item.
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</theme_item>
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<theme_item name="inner_item_margin_top" data_type="constant" type="int" default="0">
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The inner top margin of an item.
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</theme_item>
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<theme_item name="item_margin" data_type="constant" type="int" default="16">
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The horizontal margin at the start of an item. This is used when folding is enabled for the item.
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</theme_item>
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