104 lines
3.3 KiB
Go
104 lines
3.3 KiB
Go
package theme
|
|
|
|
import "image"
|
|
import "image/color"
|
|
import "golang.org/x/image/font"
|
|
import "git.tebibyte.media/sashakoshka/tomo/artist"
|
|
import "git.tebibyte.media/sashakoshka/tomo/canvas"
|
|
|
|
// IconSize is a type representing valid icon sizes.
|
|
type IconSize int
|
|
|
|
const (
|
|
IconSizeSmall IconSize = 16
|
|
IconSizeLarge IconSize = 48
|
|
)
|
|
|
|
// Pattern lists a number of cannonical pattern types, each with its own ID.
|
|
// This allows custom elements to follow themes, even those that do not
|
|
// explicitly support them.
|
|
type Pattern int; const (
|
|
// PatternAccent is the accent color of the theme. It is safe to assume
|
|
// that this is, by default, a solid color.
|
|
PatternAccent Pattern = iota
|
|
|
|
// PatternBackground is the background color of the theme. It is safe to
|
|
// assume that this is, by default, a solid color.
|
|
PatternBackground
|
|
|
|
// PatternForeground is the foreground text color of the theme. It is
|
|
// safe to assume that this is, by default, a solid color.
|
|
PatternForeground
|
|
|
|
// PatternDead is a pattern that is displayed on a "dead area" where no
|
|
// controls exist, but there still must be some indication of visual
|
|
// structure (such as in the corner between two scroll bars).
|
|
PatternDead
|
|
|
|
// PatternRaised is a generic raised pattern.
|
|
PatternRaised
|
|
|
|
// PatternSunken is a generic sunken pattern.
|
|
PatternSunken
|
|
|
|
// PatternPinboard is similar to PatternSunken, but it is textured.
|
|
PatternPinboard
|
|
|
|
// PatternButton is a button pattern.
|
|
PatternButton
|
|
|
|
// PatternInput is a pattern for input fields, editable text areas, etc.
|
|
PatternInput
|
|
|
|
// PatternGutter is a track for things to slide on.
|
|
PatternGutter
|
|
|
|
// PatternHandle is a handle that slides along a gutter.
|
|
PatternHandle
|
|
)
|
|
|
|
// Hints specifies rendering hints for a particular pattern. Elements can take
|
|
// these into account in order to gain extra performance.
|
|
type Hints struct {
|
|
// StaticInset defines an inset rectangular area in the middle of the
|
|
// pattern that does not change between PatternStates. If the inset is
|
|
// zero on all sides, this hint does not apply.
|
|
StaticInset artist.Inset
|
|
|
|
// Uniform specifies a singular color for the entire pattern. If the
|
|
// alpha channel is zero, this hint does not apply.
|
|
Uniform color.RGBA
|
|
}
|
|
|
|
// Theme represents a visual style configuration,
|
|
type Theme interface {
|
|
// FontFace returns the proper font for a given style, size, and case.
|
|
FontFace (FontStyle, FontSize, Case) font.Face
|
|
|
|
// Icon returns an appropriate icon given an icon name, size, and case.
|
|
Icon (string, IconSize, Case) canvas.Image
|
|
|
|
// Pattern returns an appropriate pattern given a pattern name, case,
|
|
// and state.
|
|
Pattern (Pattern, PatternState, Case) artist.Pattern
|
|
|
|
// Padding returns how much space should be between the bounds of a
|
|
// pattern whatever an element draws inside of it.
|
|
Padding (Pattern, Case) artist.Inset
|
|
|
|
// Margin returns the left/right (x) and top/bottom (y) margins that
|
|
// should be put between any self-contained objects drawn within this
|
|
// pattern (if applicable).
|
|
Margin (Pattern, Case) image.Point
|
|
|
|
// Sink returns a vector that should be added to an element's inner
|
|
// content when it is pressed down (if applicable) to simulate a 3D
|
|
// sinking effect.
|
|
Sink (Pattern, Case) image.Point
|
|
|
|
// Hints returns rendering optimization hints for a particular pattern.
|
|
// These are optional, but following them may result in improved
|
|
// performance.
|
|
Hints (Pattern, Case) Hints
|
|
}
|