79 lines
2.9 KiB
Go
79 lines
2.9 KiB
Go
package theme
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// Case sepecifies what kind of element is using a pattern. It contains a
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// namespace parameter and an element parameter. The element parameter does not
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// necissarily need to match an element name, but if it can, it should. Both
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// parameters should be written in camel case. Themes can change their styling
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// based on this parameter for fine-grained control over the look and feel of
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// specific elements.
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type Case struct { Namespace, Element string }
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// C can be used as shorthand to generate a case struct as used in State.
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func C (namespace, element string) (c Case) {
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return Case {
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Namespace: namespace,
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Element: element,
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}
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}
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// State lists parameters which can change the appearance of some patterns and
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// colors. For example, passing a State with Selected set to true may result in
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// a pattern that has a colored border within it.
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type State struct {
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// On should be set to true if the element that is using this pattern is
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// in some sort of selected or "on" state, such as if a checkbox is
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// checked or a switch is toggled on. This is only necessary if the
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// element in question is capable of being toggled or selected.
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On bool
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// Focused should be set to true if the element that is using this
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// pattern is currently focused.
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Focused bool
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// Pressed should be set to true if the element that is using this
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// pattern is being pressed down by the mouse. This is only necessary if
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// the element in question processes mouse button events.
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Pressed bool
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// Disabled should be set to true if the element that is using this
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// pattern is locked and cannot be interacted with. Disabled variations
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// of patterns are typically flattened and greyed-out.
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Disabled bool
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// Invalid should be set to true if th element that is using this
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// pattern wants to warn the user of an invalid interaction or data
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// entry. Invalid variations typically have some sort of reddish tint
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// or outline.
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Invalid bool
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}
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// FontStyle specifies stylistic alterations to a font face.
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type FontStyle int; const (
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FontStyleRegular FontStyle = 0
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FontStyleBold FontStyle = 1
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FontStyleItalic FontStyle = 2
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FontStyleBoldItalic FontStyle = 1 | 2
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)
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// FontSize specifies the general size of a font face in a semantic way.
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type FontSize int; const (
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// FontSizeNormal is the default font size that should be used for most
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// things.
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FontSizeNormal FontSize = iota
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// FontSizeLarge is a larger font size suitable for things like section
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// headings.
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FontSizeLarge
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// FontSizeHuge is a very large font size suitable for things like
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// titles, wizard step names, digital clocks, etc.
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FontSizeHuge
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// FontSizeSmall is a smaller font size. Try not to use this unless it
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// makes a lot of sense to do so, because it can negatively impact
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// accessibility. It is useful for things like copyright notices at the
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// bottom of some window that the average user doesn't actually care
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// about.
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FontSizeSmall
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)
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