mtk

package module
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 Go to latest Published: Apr 23, 2024 License: GPL-2.0 Imports: 17 Imported by: 5

README

Introduction

MTK(Mural Toolkit) is a simple widget toolkit for creating graphical user interfaces written in Go with Pixel and Beep libraries.

The toolkit provides basic UI elements(buttons, text boxes, switches, lists, animations, etc.), simple audio handling and automatic scaling of UI elements.

Originally created as a part of Mural GUI.

MTK highly relies on Pixel library, make sure to check Pixel wiki first.

Dependencies

Basic dependencies are OpenGL development libraries, and some audio development libraries.

Linux

On Fedora-like distribution install: go libX11-devel libXcursor-devel libXrandr-devel libXinerama-devel mesa-libGL-devel libXi-devel libXxf86vm-devel alsa-lib-devel.

On other distributions, you need to install the equivalence of these packages.

macOS

Install Go and Xcode or Command Line Tools for Xcode.

Windows

Install Go

Examples

All UI elements are automatically scaled to size specified in Pixel WindowConfig.

Create window:

// Create Pixel window configuration.
cfg := pixelgl.WindowConfig{
       Title:  "MTK window",
       Bounds: pixel.R(0, 0, 1600, 900),
}
// Create MTK warpper for Pixel window.
win, err := mtk.NewWindow(cfg)
if err != nil {
       panic(fmt.Errorf("Unable to create MTK window: %v", err))
}

Create button:

// Specify button parameters.
params := mtk.Params{
	Size:      mtk.SizeBig,
	FontSize:  mtk.SizeMedium,
	Shape:     mtk.ShapeRectangle,
	MainColor: colornames.Red,
}
// Create button.
button := mtk.NewButton(params)
// Set label and on-hover info.
button.SetLabel("Button")
button.SetInfo("Button info")
// Set some function on button click event.
button.SetOnClickFunc(onButtonClickedFunc)

Draw button in window:

for !win.Closed() {
	// Clear window.
	win.Clear(colornames.Black)
	// Draw button.
	buttonPos := win.Bounds().Center()
	button.Draw(win, mtk.Matrix().Moved(buttonPos))
	// Update.
	win.Update()
	button.Update(win)
}

Check example package for more detailed examples.

Documentation

Source code documentation can be easily browsed with go doc command.

Contributing

You are welcome to contribute to project development.

If you looking for things to do, then check TODO file or contact maintainer(ds@isangeles.dev).

When you find something to do, create new branch for your feature. After you finish, open pull request to merge your changes with master branch.

Contact

License

Copyright 2018-2024 Dariusz Sikora <ds@isangeles.dev>

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Documentation

Overview

Toolkit package for Mural GUI.

Index

Constants

View Source 
const (
	// Sizes.
	SizeMini Size = iota
	SizeSmall
	SizeMedium
	SizeBig
	SizeHuge
	// Shapes.
	ShapeRectangle Shape = iota
	ShapeSquare
	// Aligns
	AlignCenter Align = iota
	AlignRight
	AlignLeft
)

Variables

This section is empty.

Functions

func Atlas 

func Atlas(f *font.Face) *text.Atlas

Atlas returns atlas for UI text with specified font.

func BottomOf 

func BottomOf(drawArea pixel.Rect, size pixel.Vec, offset float64) pixel.Vec

BottomOf returns position of rect with specified size at the bottom of speicified draw area, width specified offset value.

func ConvSize 

func ConvSize(size1080p float64) float64

Size converts specified default size value(for 1080p) to value for current resolution.

func ConvVec 

func ConvVec(vec1080p pixel.Vec) pixel.Vec

ConvVec converts specified default Pixel XY vector values(for 1080p) to vector with values for current resolution.

func DisBL 

func DisBL(rect pixel.Rect, scale float64) pixel.Vec

DisBL returns bottom left position of specified rectangle multiplied by specified value.

func DisBR 

func DisBR(rect pixel.Rect, scale float64) pixel.Vec

DisBR returns bottom right position of specified rectangle multiplied by specified value.

func DisTL 

func DisTL(rect pixel.Rect, scale float64) pixel.Vec

DisTL returns top left position of specified rectangle multiplied by specified value.

func DisTR 

func DisTR(rect pixel.Rect, scale float64) pixel.Vec

DisTR returns top right position of specified rectangle multiplied by specified value.

func DrawPosBC 

func DrawPosBC(bg pixel.Rect, size pixel.Vec) pixel.Vec

DrawPosBC returns bottom center draw position(center) on specified background for object with specified size.

func DrawPosBL 

func DrawPosBL(bg pixel.Rect, size pixel.Vec) pixel.Vec

DrawPosBL returns bottom left draw position(center) on specified background for object with specified size.

func DrawPosBR 

func DrawPosBR(bg pixel.Rect, size pixel.Vec) pixel.Vec

DrawPosBR returns bottom right draw position(center) on specified background for object with specified size.

func DrawPosCL 

func DrawPosCL(bg pixel.Rect, size pixel.Vec) pixel.Vec

DrawPosCL returns center left draw position(center) on specified background for object with specified size.

func DrawPosCR 

func DrawPosCR(bg pixel.Rect, size pixel.Vec) pixel.Vec

DrawPosCR returns center right draw position(center) on specified background for object with specified size.

func DrawPosTC 

func DrawPosTC(bg pixel.Rect, size pixel.Vec) pixel.Vec

DrawPosTC returns top center draw position(center) on specified background for object with specified size.

func DrawPosTL 

func DrawPosTL(bg pixel.Rect, size pixel.Vec) pixel.Vec

DrawPosTR returns top left position for draw specifed object with specified size.

func DrawPosTR 

func DrawPosTR(bg pixel.Rect, size pixel.Vec) pixel.Vec

DrawPosTR returns top right draw position(center) on specified background for object with specified size.

func DrawRectangle 

func DrawRectangle(t pixel.Target, drawArea pixel.Rect, color color.Color)

DrawRectangle draw rectangle on specified target with specified draw area(position and size) and color.

func InitAudio 

func InitAudio(format beep.Format) error

InitAudio initializes the system audio with specified format. It need to be called before using the audio player struct.

func LeftOf 

func LeftOf(drawArea pixel.Rect, size pixel.Vec, offset float64) pixel.Vec

LeftOf returns position for rect with specified size at the left side of specified draw area, with specified offset value.

func MainFont 

func MainFont(s Size) font.Face

MainFont returns main font in specified size from data package.

func Matrix 

func Matrix() pixel.Matrix

Matrix return scaled identity matrix.

func MatrixToDrawArea 

func MatrixToDrawArea(matrix pixel.Matrix, rectSize pixel.Vec) (drawArea pixel.Rect)

MatrixToDrawArea calculates draw area based on specified matrix and rectangle.

func MoveBC 

func MoveBC(bgSize, obSize pixel.Vec) pixel.Vec

MoveBC returns move vector from center of background with specified size to bottom center point draw position(center) for specified size.

func MoveBL 

func MoveBL(bgSize, obSize pixel.Vec) pixel.Vec

MoveBL returns move vector from center of background with specified size to bottom left point draw position(center) for specified size.

func MoveBR 

func MoveBR(bgSize, obSize pixel.Vec) pixel.Vec

MoveBR returns move vector from center of background with specified size to bottom right point draw position(center) for specified size.

func MoveTC 

func MoveTC(bgSize, obSize pixel.Vec) pixel.Vec

MoveTC returns move vector from center of background with specified size to top center point draw position(center) for specified size.

func MoveTL 

func MoveTL(bgSize, obSize pixel.Vec) pixel.Vec

MoveTL returns move vector from center of background with specified size to top left point draw position(center) for specified size.

func MoveTR 

func MoveTR(bgSize, obSize pixel.Vec) pixel.Vec

MoveTR returns move vector from center of background with specified size to top right point draw position(center) for specified size.

func PosBL 

func PosBL(size pixel.Rect, pos pixel.Vec) pixel.Vec

PosBL returns bottom left point for specified position of specified rectangle.

func PosBR 

func PosBR(size pixel.Rect, pos pixel.Vec) pixel.Vec

PosBR returns bottom right point for specified position of specified rectangle.

func PosTL 

func PosTL(size pixel.Rect, pos pixel.Vec) pixel.Vec

PosTL returns top left point for specified position of specified rectangle.

func PosTR 

func PosTR(size, pos pixel.Vec) pixel.Vec

PosTR returns top right point for specified position of specified rectangle.

func Range 

func Range(from, to pixel.Vec) float64

Range returns range between two specified positions.

func RightOf 

func RightOf(drawArea pixel.Rect, size pixel.Vec, offset float64) pixel.Vec

ReightOf returns position for rect with specified size at the right side of specified draw area, with specified offset value.

func Scale 

func Scale() float64

Scale return scale value for current resolution.

func SetButtonClickSound 

func SetButtonClickSound(s *beep.Buffer)

SetButtonClickSound sets specified audio buffer as on-click audio effect for all buttons.

func SetMainFont 

func SetMainFont(font *truetype.Font)

Sets specified truetype font as current main font of the interface.

func SlotCopy 

func SlotCopy(slotA, slotB *Slot)

SlotCopy copies content from slot A to slot B(overwrites current content).

func SlotSwitch 

func SlotSwitch(slotA, slotB *Slot)

SlotSwitch transfers all contant of slot A (value, icon, label, info) to slot B and vice versa.

func SplitSubN 

func SplitSubN(s string, n int) []string

Splits string to chunks with n as max chunk width. Author: mozey(@stackoverflow).

func TopOf 

func TopOf(drawArea pixel.Rect, size pixel.Vec, offset float64) pixel.Vec

TopOf returns position for rect with specified size at the top of specified draw area, with specified offset value.

Types

type Align 

type Align int

Type for aligns. Directions: center(0), right(1), left(2)

type Animation 

type Animation struct {
	// contains filtered or unexported fields
}

Struct for animations.

func NewAnimation 

func NewAnimation(frames []*pixel.Sprite, fps int) *Animation

NewAnimation creates new animation with specified frames and FPS value. Animation is looping by default.

func (*Animation) Draw 

func (anim *Animation) Draw(t pixel.Target, matrix pixel.Matrix)

Draw draws current animation frame.

func (*Animation) DrawArea 

func (anim *Animation) DrawArea() pixel.Rect

DrawArea returns current frame draw area.

func (*Animation) Finished 

func (anim *Animation) Finished() bool

Finished checks whether animation is finished, i.e. current frame is last frame of animation.

func (*Animation) Loop 

func (anim *Animation) Loop(loop bool)

Loop toggles animation looping.

func (*Animation) Restart 

func (anim *Animation) Restart()

Restarts restarts animation.

func (*Animation) SetCurrentFrameID 

func (anim *Animation) SetCurrentFrameID(id int)

SetCurrentFrameID sets frame with specified ID as current draw frame of animation. If specified index is bigger than maximal frame index then first index is set, if smaller than minimal then last index is set.

func (*Animation) SetFPS 

func (anim *Animation) SetFPS(fps int)

SetFPS sets number of frames per second.

func (*Animation) Update 

func (anim *Animation) Update(win *Window)

Update updates animation.

type AudioPlayer 

type AudioPlayer struct {
	// contains filtered or unexported fields
}

Struct for audio player.

func Audio 

func Audio() *AudioPlayer

Audio returns toolkit audio player. Returned audio player will not be operational if the audio was not initialized before with InitAudio function.

func NewAudioPlayer 

func NewAudioPlayer() *AudioPlayer

NewAudioPlayer creates new audio player.

func (*AudioPlayer) AddAudio 

func (ap *AudioPlayer) AddAudio(ab *beep.Buffer) error

AddAudio adds specified audio stream to the current playlist.

func (*AudioPlayer) Clear 

func (ap *AudioPlayer) Clear()

Clear clears music playlist.

func (*AudioPlayer) Muted 

func (ap *AudioPlayer) Muted() bool

Muted checks if audio player is muted.

func (*AudioPlayer) Play 

func (ap *AudioPlayer) Play(buffer *beep.Buffer)

Play starts playing specified audio stream.

func (*AudioPlayer) PlayIndex 

func (ap *AudioPlayer) PlayIndex() int

PlayIndex returns index of currently playing audio buffer from the playlist.

func (*AudioPlayer) Playing 

func (ap *AudioPlayer) Playing() bool

Playing checks if audio player is playing any audio buffer.

func (*AudioPlayer) Playlist 

func (ap *AudioPlayer) Playlist() []*beep.Buffer

Playlist returns the audio player playlist.

func (*AudioPlayer) Reset 

func (ap *AudioPlayer) Reset()

Reset stops player and moves play index to first music playlist index.

func (*AudioPlayer) ResumePlaylist 

func (ap *AudioPlayer) ResumePlaylist()

ResumePlaylist starts playing audio from the playlist for current playlist ID.

func (*AudioPlayer) SetMute 

func (ap *AudioPlayer) SetMute(m bool)

SetMute mutes/unmutes audio player.

func (*AudioPlayer) SetPlayIndex 

func (ap *AudioPlayer) SetPlayIndex(id int)

SetPlayIndex sets specified index as current index on music playlist. If specified value is bigger than playlist lenght then first index is set, if is lower than 0 then last index is set.

func (*AudioPlayer) SetPlaylist 

func (ap *AudioPlayer) SetPlaylist(playlist []*beep.Buffer)

SetPlaylist sets specified slice with audio streams as player playlist.

func (*AudioPlayer) SetVolume 

func (ap *AudioPlayer) SetVolume(v float64)

SetVolume sets specified value as current audio volume value. 0 - unmodified(system volume), > 0 - lauder, < 0 quieter.

func (*AudioPlayer) Stop 

func (ap *AudioPlayer) Stop()

Stop stops player.

func (*AudioPlayer) Volume 

func (ap *AudioPlayer) Volume() float64

Volume returns current volume value. 0 - unmodified(system volume), > 0 - lauder, < 0 quieter.

type Button 

type Button struct {
	// contains filtered or unexported fields
}

Button struct for UI button.

func NewButton 

func NewButton(params Params) *Button

NewButton creates new button with specified parameters.

func (*Button) Active 

func (b *Button) Active(active bool)

Active toggles button active state.

func (*Button) Disabled 

func (b *Button) Disabled() bool

Disabled checks whether button is disabled.

func (*Button) Draw 

func (b *Button) Draw(t pixel.Target, matrix pixel.Matrix)

Draw draws button.

func (*Button) DrawArea 

func (b *Button) DrawArea() pixel.Rect

DrawArea returns current button background position and size.

func (*Button) Focus 

func (b *Button) Focus(focus bool)

Focus sets/removes focus from button

func (*Button) Focused 

func (b *Button) Focused() bool

Focused checks whether buttons is focused.

func (*Button) SetBackground 

func (b *Button) SetBackground(s *pixel.Sprite)

SetBackground sets specified sprite as button background, also removes background color.

func (*Button) SetClickSound 

func (b *Button) SetClickSound(s *beep.Buffer)

SetClickSound sets specified audio buffer as on-click audio effect.

func (*Button) SetColor 

func (b *Button) SetColor(c color.Color)

SetColor sets specified color as current button backgroun color.

func (*Button) SetInfo 

func (b *Button) SetInfo(t string)

SetInfo sets specified text as content of button info window.

func (*Button) SetLabel 

func (b *Button) SetLabel(t string)

SetLabel sets specified text as button label.

func (*Button) SetOnClickFunc 

func (b *Button) SetOnClickFunc(callback func(b *Button))

SetOnClickFunc sets specified function as on-click callback function.

func (*Button) Size 

func (b *Button) Size() pixel.Vec

Size returns button background size.

func (*Button) Update 

func (b *Button) Update(win *Window)

Update updates button.

type CheckSlot 

type CheckSlot struct {
	// contains filtered or unexported fields
}

Struct for 'chackable' slots.

func NewCheckSlot 

func NewCheckSlot(label string, value interface{}, bgSize pixel.Vec,
	color, checkColor color.Color) *CheckSlot

NewCheckSlot creates new item for list.

func (*CheckSlot) Check 

func (cs *CheckSlot) Check(check bool)

Check toggles slot selection.

func (*CheckSlot) Checked 

func (cs *CheckSlot) Checked() bool

Checked checks whether slot is checked.

func (*CheckSlot) Draw 

func (cs *CheckSlot) Draw(t pixel.Target, matrix pixel.Matrix)

Draw draws slot.

func (*CheckSlot) DrawArea 

func (cs *CheckSlot) DrawArea() pixel.Rect

DrawArea returns current slot draw area.

func (*CheckSlot) Label 

func (cs *CheckSlot) Label() string

Label returns slot label.

func (*CheckSlot) SetOnCheckFunc 

func (cs *CheckSlot) SetOnCheckFunc(f func(s *CheckSlot))

SetOnCheckFunc sets specified function as function triggered after slot was selected.

func (*CheckSlot) SetSize 

func (cs *CheckSlot) SetSize(s pixel.Vec)

SetSize sets specified vector as background size.

func (*CheckSlot) Size 

func (cs *CheckSlot) Size() pixel.Vec

Size returns slot background size.

func (*CheckSlot) Update 

func (cs *CheckSlot) Update(win *Window)

Update updates slot.

func (*CheckSlot) Value 

func (cs *CheckSlot) Value() interface{}

Value returns slot value.

type Focus 

type Focus struct {
	// contains filtered or unexported fields
}

Focus represents user focus on UI element.

func (*Focus) Focus 

func (f *Focus) Focus(e Focuser)

Focus sets focus on specified focusable element. Previously focused element(if exists) is unfocused before focusing specified one.

type Focuser 

type Focuser interface {
	Focus(focus bool)
	Focused() bool
}

Interface for all 'focusable' UI elements, like buttons, switches, etc.

type InfoWindow 

type InfoWindow struct {
	*Text
	// contains filtered or unexported fields
}

InfoWindow struct for small text boxes that follows mouse cursor.

func NewInfoWindow 

func NewInfoWindow(params Params) *InfoWindow

NewInfoWindow creates new information window.

func (*InfoWindow) Draw 

func (iw *InfoWindow) Draw(t pixel.Target)

Draw draws info window.

func (*InfoWindow) Update 

func (iw *InfoWindow) Update(win *Window)

Update updates info window.

type List 

type List struct {
	// contains filtered or unexported fields
}

Struct for list with 'selectable' items.

func NewList 

func NewList(params Params) *List

NewList creates new list with specified parameters.

func (*List) Active 

func (l *List) Active(active bool)

Active toggles list activity.

func (*List) AddItem 

func (l *List) AddItem(label string, value interface{})

AddItem adds specified value with label to current list content.

func (*List) Clear 

func (l *List) Clear()

Clear clears list.

func (*List) Disabled 

func (l *List) Disabled() bool

Disabled checks whether list is disabled.

func (*List) Draw 

func (l *List) Draw(t pixel.Target, matrix pixel.Matrix)

Draw draws list.

func (*List) DrawArea 

func (l *List) DrawArea() pixel.Rect

DrawArea returns current list background position and size.

func (*List) Focus 

func (l *List) Focus(focus bool)

Focus toggles focus on element.

func (*List) Focused 

func (l *List) Focused() bool

Focused checks whether list is focused.

func (*List) InsertItems 

func (l *List) InsertItems(items map[string]interface{})

InsertItems sets specified values with labels as current list content.

func (*List) SelectedValue 

func (l *List) SelectedValue() interface{}

SelectedValue returns value of currently selected list item.

func (*List) SetDownButtonBackground 

func (l *List) SetDownButtonBackground(s *pixel.Sprite)

SetDownButtonBackground sets specified sprite as scroll down button background.

func (*List) SetOnItemSelectFunc 

func (l *List) SetOnItemSelectFunc(f func(i *CheckSlot))

SetOnItemSelectFunc sets specified function as function triggered after one of list items was selected.

func (*List) SetStartIndex 

func (l *List) SetStartIndex(index int)

SetStartIndex sets specified integer as index of first item to display. If specified value is bigger than last item index then first index(0) is set, if is smaller than 0 then last index is set.

func (*List) SetUpButtonBackground 

func (l *List) SetUpButtonBackground(s *pixel.Sprite)

SetUpButtonBackground sets specified sprite as scroll up button background.

func (*List) Size 

func (l *List) Size() pixel.Vec

Size returns list background size

func (*List) Update 

func (l *List) Update(win *Window)

Update updates list.

type MessageQueue 

type MessageQueue struct {
	// contains filtered or unexported fields
}

MessageQueue struct for list with messages to display.

func NewMessageQueue 

func NewMessageQueue(focus *Focus) *MessageQueue

NewMessageQueue creates new messages queue.

func (*MessageQueue) Append 

func (mq *MessageQueue) Append(m *MessageWindow)

Append adds specified message to the front of queue.

func (*MessageQueue) ContainsPosition 

func (mq *MessageQueue) ContainsPosition(pos pixel.Vec) bool

ContainsPosition checks whether specified position is contained by any message window in the queue.

func (*MessageQueue) Draw 

func (mq *MessageQueue) Draw(t pixel.Target, matrix pixel.Matrix)

Draw draws all messages

func (*MessageQueue) Remove 

func (mq *MessageQueue) Remove(i int)

Remove removes message with specified index from queue.

func (*MessageQueue) Update 

func (mq *MessageQueue) Update(win *Window)

Update updates all messages in queue.

type MessageWindow 

type MessageWindow struct {
	// contains filtered or unexported fields
}

MessageWindow struct represents UI message window.

func NewDialogWindow 

func NewDialogWindow(params Params) *MessageWindow

NewDialogWindow creates new dialog window with message.

func NewMessageWindow 

func NewMessageWindow(params Params) *MessageWindow

NewMessageWindow creates new message window instance.

func (*MessageWindow) Accepted 

func (mw *MessageWindow) Accepted() bool

Accepted checks whether message was accepted.

func (*MessageWindow) Active 

func (mw *MessageWindow) Active(active bool)

Active toggles message active state.

func (*MessageWindow) Disabled 

func (mw *MessageWindow) Disabled() bool

Disabled checks whether message is unactive.

func (*MessageWindow) Dismissed 

func (mw *MessageWindow) Dismissed() bool

Dismissed checks whether window was dismised.

func (*MessageWindow) Draw 

func (mw *MessageWindow) Draw(t pixel.Target, matrix pixel.Matrix)

Draw draws window.

func (*MessageWindow) DrawArea 

func (mw *MessageWindow) DrawArea() pixel.Rect

DrawArea returns size of current draw area.

func (*MessageWindow) Focus 

func (mw *MessageWindow) Focus(focus bool)

Focus sets or removes focus from window.

func (*MessageWindow) Focused 

func (mw *MessageWindow) Focused() bool

Focused checks whether window is focused.

func (*MessageWindow) Opened 

func (mw *MessageWindow) Opened() bool

Opened checks whether window should be open.

func (*MessageWindow) SetAcceptLabel 

func (mw *MessageWindow) SetAcceptLabel(l string)

SetAcceptLabel sets label for accept button.

func (*MessageWindow) SetCancelLabel 

func (mw *MessageWindow) SetCancelLabel(l string)

SetCancelLabel sets label for cancel button.

func (*MessageWindow) SetOnAcceptFunc 

func (mw *MessageWindow) SetOnAcceptFunc(f func(msg *MessageWindow))

SetOnAcceptFunc sets specified function as function triggered after message was accepted.

func (*MessageWindow) SetOnCancelFunc 

func (mw *MessageWindow) SetOnCancelFunc(f func(msg *MessageWindow))

SetOnCancelFunc sets specified function as function triggered after message was canceled.

func (*MessageWindow) Show 

func (mw *MessageWindow) Show(show bool)

Show toggles window visibility.

func (*MessageWindow) Size 

func (mw *MessageWindow) Size() pixel.Vec

Size resturns message window size.

func (*MessageWindow) Update 

func (mw *MessageWindow) Update(win *Window)

Update handles key press events.

type MultiAnimation 

type MultiAnimation struct {
	// contains filtered or unexported fields
}

Struct with sparate animation for each direction(up, right, down and left).

func NewMultiAnimation 

func NewMultiAnimation(up, right, down, left *Animation) *MultiAnimation

NewMultiAnimation creates new multi direction animation from specified animations(up, right, down, left).

func (*MultiAnimation) Down 

func (ma *MultiAnimation) Down()

Down sets animation direction to down.

func (*MultiAnimation) Draw 

func (ma *MultiAnimation) Draw(t pixel.Target, matrix pixel.Matrix)

Draw draws animation for current dirtection.

func (*MultiAnimation) DrawArea 

func (ma *MultiAnimation) DrawArea() pixel.Rect

DrawArea returns current draw area.

func (*MultiAnimation) Finished 

func (ma *MultiAnimation) Finished() bool

Finished checks whether current animation is finished.

func (*MultiAnimation) Left 

func (ma *MultiAnimation) Left()

Left sets animation direction to left.

func (*MultiAnimation) Loop 

func (ma *MultiAnimation) Loop(loop bool)

Loop toggles animation looping for each direction.

func (*MultiAnimation) Restart 

func (ma *MultiAnimation) Restart()

Restart restarts all animations.

func (*MultiAnimation) Right 

func (ma *MultiAnimation) Right()

Right sets animation direction to right.

func (*MultiAnimation) Up 

func (ma *MultiAnimation) Up()

Up sets animation direction to up.

func (*MultiAnimation) Update 

func (ma *MultiAnimation) Update(win *Window)

Update updates animation for current direction.

type Params 

type Params struct {
	MainColor   color.Color
	SecColor    color.Color
	AccentColor color.Color
	Size        Size
	SizeRaw     pixel.Vec
	FontSize    Size
	Shape       Shape
	Background  *pixel.Sprite
	Label       string
	Info        string
}

Struct for MTK graphical widget parameters.

type ProgressBar 

type ProgressBar struct {
	// contains filtered or unexported fields
}

Struct for progress bars.

func NewProgressBar 

func NewProgressBar(size Size, color color.Color) *ProgressBar

NewProgressBar creates new progress bar with IMDraw background bar with specified size, color and label text.

func (*ProgressBar) Draw 

func (pb *ProgressBar) Draw(t pixel.Target, matrix pixel.Matrix)

Draw draws progress bar.

func (*ProgressBar) DrawArea 

func (pb *ProgressBar) DrawArea() pixel.Rect

DrawArea returns current last draw area of this element.

func (*ProgressBar) Max 

func (pb *ProgressBar) Max() int

Max retruns maximal progress value.

func (*ProgressBar) SetBackground 

func (pb *ProgressBar) SetBackground(p pixel.Picture)

SetBackground sets specified sprite as bar background, also removes current background color.

func (*ProgressBar) SetColor 

func (pb *ProgressBar) SetColor(c color.Color)

SetColor sets specified color as background color.

func (*ProgressBar) SetLabel 

func (pb *ProgressBar) SetLabel(t string)

SetLabel sets specified text as progress label.

func (*ProgressBar) SetMax 

func (pb *ProgressBar) SetMax(max int)

SetMax sets specified value as progress maximal value.

func (*ProgressBar) SetValue 

func (pb *ProgressBar) SetValue(val int)

SetValue sets specified value as current progress value.

func (*ProgressBar) Size 

func (pb *ProgressBar) Size() pixel.Vec

Size returns bar size.

func (*ProgressBar) Update 

func (pb *ProgressBar) Update(win *Window)

Update updates progress bar.

func (*ProgressBar) Value 

func (pb *ProgressBar) Value() int

Value retruns current progress value.

type Shape 

type Shape int

Type for shapes of UI elements. Shapes: rectangle(0), square(1).

type Size 

type Size int

Type for sizes of UI elements, like buttons, switches, etc. Sizes: mini(0), small(1), medium(2), big(3), huge(4).

func (Size) BarSize 

func (s Size) BarSize() pixel.Vec

BarSize returns size parameters for progress bar.

func (Size) ButtonSize 

func (s Size) ButtonSize(sh Shape) pixel.Vec

ButtonSize returns szie parameters for button with this size and with specifed shape.

func (Size) ListSize 

func (s Size) ListSize() pixel.Vec

ListSize returns size parameters for list.

func (Size) MessageWindowSize 

func (s Size) MessageWindowSize() pixel.Vec

MessageWindowSize returns size parameters for message window.

func (Size) SlotSize 

func (s Size) SlotSize() pixel.Vec

SlotSize returns size parameters for slot.

func (Size) SwitchSize 

func (s Size) SwitchSize() pixel.Vec

SwitchSize return rectangele parameters for switch with this size.

type Slot 

type Slot struct {
	// contains filtered or unexported fields
}

Struct for slot.

func NewSlot 

func NewSlot(params Params) *Slot

NewSlot creates new slot without background.

func (*Slot) AddValues 

func (s *Slot) AddValues(vls ...interface{})

AddValue adds specified interface to slot values list.

func (*Slot) Clear 

func (s *Slot) Clear()

Clear removes slot value, icon, label and text.

func (*Slot) Drag 

func (s *Slot) Drag(drag bool)

Drag toggles slot drag mode(icon follows mouse cursor).

func (*Slot) Dragged 

func (s *Slot) Dragged() bool

Dragged checks whether slot is in drag mode(icon follows mouse cursor).

func (*Slot) Draw 

func (s *Slot) Draw(t pixel.Target, matrix pixel.Matrix)

Draw draws slot.

func (*Slot) DrawArea 

func (s *Slot) DrawArea() pixel.Rect

DrawArea returns current slot background draw area.

func (*Slot) Icon 

func (s *Slot) Icon() pixel.Picture

Icon returns current slot icon picture.

func (*Slot) Label 

func (s *Slot) Label() string

Label returns slot label text.

func (*Slot) Pop 

func (s *Slot) Pop() interface{}

Pop removes and returns first value from slot. Clears slot if removed value was last value in slot.

func (*Slot) SetColor 

func (s *Slot) SetColor(c color.Color)

SetColor sets specified color as slot color.

func (*Slot) SetIcon 

func (s *Slot) SetIcon(pic pixel.Picture)

SetIcon sets specified sprite as current slot icon.

func (*Slot) SetInfo 

func (s *Slot) SetInfo(text string)

SetInfo sets specified text as content of slot info window.

func (*Slot) SetLabel 

func (s *Slot) SetLabel(text string)

SetLabel sets specified text as slot label.

func (*Slot) SetOnLeftClickFunc 

func (s *Slot) SetOnLeftClickFunc(f func(s *Slot))

SetOnLeftClickFunc set speicfied function as function triggered after left mouse click event.

func (*Slot) SetOnRightClickFunc 

func (s *Slot) SetOnRightClickFunc(f func(s *Slot))

SetOnClickFunc set speicfied function as function triggered after right mouse click event.

func (*Slot) SetOnSpecialLeftClickFunc 

func (s *Slot) SetOnSpecialLeftClickFunc(f func(s *Slot))

SetOnSpecialLeftClickFunc set speicfied function as function triggered after special key pressed + left mouse click event.

func (*Slot) SetOnSpecialRightClickFunc 

func (s *Slot) SetOnSpecialRightClickFunc(f func(s *Slot))

SetOnSpecialRightClickFunc set speicfied function as function triggered after special key pressed + right mouse click event.

func (*Slot) SetSpecialKey 

func (s *Slot) SetSpecialKey(k pixelgl.Button)

SetSpecialKey sets special key for slot click events.

func (*Slot) SetValues 

func (s *Slot) SetValues(vls []interface{})

SetValues replaces current values with specified ones.

func (*Slot) Size 

func (s *Slot) Size() pixel.Vec

Size returns slot size.

func (*Slot) Update 

func (s *Slot) Update(win *Window)

Update updates slot.

func (*Slot) Values 

func (s *Slot) Values() []interface{}

Values returns all slot values.

type SlotList 

type SlotList struct {
	// contains filtered or unexported fields
}

Struct for list with slots.

func NewSlotList 

func NewSlotList(bgSize pixel.Vec, bgColor color.Color, slotSize Size) *SlotList

NewSlotList creates new list with slots.

func (*SlotList) Add 

func (sl *SlotList) Add(s *Slot)

Add adds specified slot to list.

func (*SlotList) Clear 

func (sl *SlotList) Clear()

Clear clears all slots on the list.

func (*SlotList) Draw 

func (sl *SlotList) Draw(t pixel.Target, matrix pixel.Matrix)

Draw draws list.

func (*SlotList) EmptySlot 

func (sl *SlotList) EmptySlot() *Slot

EmptySlot returns first empty slot.

func (*SlotList) SetDownButtonBackground 

func (sl *SlotList) SetDownButtonBackground(s *pixel.Sprite)

SetDownButtonBackground sets specified sprite as scroll down button background.

func (*SlotList) SetUpButtonBackground 

func (sl *SlotList) SetUpButtonBackground(s *pixel.Sprite)

SetUpButtonBackground sets specified sprite as scroll up button background.

func (*SlotList) Size 

func (sl *SlotList) Size() pixel.Vec

Bounds retruns background size.

func (*SlotList) Slots 

func (sl *SlotList) Slots() []*Slot

Slots returns all slots from list.

func (*SlotList) Update 

func (sl *SlotList) Update(win *Window)

Update updates list.

type Switch 

type Switch struct {
	// contains filtered or unexported fields
}

Switch struct represents graphical switch for values.

func NewSwitch 

func NewSwitch(params Params) *Switch

NewSwitch creates new switch with specified size and color.

func (*Switch) Active 

func (s *Switch) Active(active bool)

Active toggles switch activity.

func (*Switch) Disabled 

func (s *Switch) Disabled() bool

Disabled checks whether switch is active.

func (*Switch) Draw 

func (s *Switch) Draw(t pixel.Target, matrix pixel.Matrix)

Draw draws switch.

func (*Switch) DrawArea 

func (s *Switch) DrawArea() pixel.Rect

DrawArea returns current switch background position and size.

func (*Switch) Find 

func (s *Switch) Find(value interface{}) int

Find checks if switch constains specified value and returns index of this value or -1 if switch does not contains such value.

func (*Switch) FindValue 

func (s *Switch) FindValue(index int) *SwitchValue

Find searches switch values for value with specified index and returns this value or nil if switch does not contains value with such index.

func (*Switch) Focus 

func (s *Switch) Focus(focus bool)

Focus toggles focus on element.

func (*Switch) Focused 

func (s *Switch) Focused() bool

Focused checks whether switch is focused.

func (*Switch) Reset 

func (s *Switch) Reset()

Reset sets value with first index as current value.

func (*Switch) SetBackground 

func (s *Switch) SetBackground(spr *pixel.Sprite)

SetBackground sets specified sprite as switch background, also removes background color.

func (*Switch) SetColor 

func (s *Switch) SetColor(c color.Color)

SetColor sets specified color as switch background color.

func (*Switch) SetIndex 

func (s *Switch) SetIndex(index int)

SetIndex sets value with specified index as current value of this switch. If specified value is bigger than maximal possible index, then index of first value is set, if specified index is smaller than minimal, then index of last value is set.

func (*Switch) SetInfo 

func (s *Switch) SetInfo(t string)

SetInfo sets specified text as info.

func (*Switch) SetIntValues 

func (s *Switch) SetIntValues(min, max int)

SwtIntValues adds to witch all integers from specified min/max range.

func (*Switch) SetLabel 

func (s *Switch) SetLabel(t string)

SetLabel sets specified text as label.

func (*Switch) SetNextButtonBackground 

func (s *Switch) SetNextButtonBackground(spr *pixel.Sprite)

SetNextButtonBackground sets specified sprite as next button background.

func (*Switch) SetOnChangeFunc 

func (s *Switch) SetOnChangeFunc(f func(s *Switch, old, new *SwitchValue))

Sets specified function as function triggered on on switch value change.

func (*Switch) SetPrevButtonBackground 

func (s *Switch) SetPrevButtonBackground(spr *pixel.Sprite)

SetPrevButtonBackground sets specified sprite as previous button background.

func (*Switch) SetValues 

func (s *Switch) SetValues(values ...SwitchValue)

SetValues sets specified list with values as switch values.

func (*Switch) Size 

func (s *Switch) Size() pixel.Vec

Size returns switch background size.

func (*Switch) Update 

func (s *Switch) Update(win *Window)

Update updates switch and all elements.

func (*Switch) Value 

func (s *Switch) Value() *SwitchValue

Value returns current switch value.

type SwitchValue 

type SwitchValue struct {
	View  interface{}
	Value interface{}
}

Tuple for switch values, contains value to display(view) and real value.

type Text 

type Text struct {
	// contains filtered or unexported fields
}

Text struct for short text like labels, names, etc.

func NewText 

func NewText(p Params) *Text

NewText creates new text with specified parameters.

func (*Text) Align 

func (t *Text) Align(a Align)

Align aligns text to specified position.

func (*Text) BoundsOf 

func (tx *Text) BoundsOf(text string) pixel.Rect

BoundsOf returns bounds of specified text while displayed.

func (*Text) Clear 

func (t *Text) Clear()

Clear clears texts,

func (*Text) Content 

func (t *Text) Content() string

Content returs text content.

func (*Text) Draw 

func (tx *Text) Draw(t pixel.Target, matrix pixel.Matrix)

Draw draws text.

func (*Text) DrawArea 

func (tx *Text) DrawArea() pixel.Rect

DrawArea returns current draw area of text.

func (*Text) SetColor 

func (tx *Text) SetColor(c color.Color)

SetColor sets specified color as current text color.

func (*Text) SetMaxWidth 

func (tx *Text) SetMaxWidth(width float64)

SetMaxWidth sets maximal width of single text line.

func (*Text) SetText 

func (t *Text) SetText(text string)

SetText sets specified text as text to display.

func (*Text) Size 

func (tx *Text) Size() pixel.Vec

Size returns size of current text.

func (*Text) String 

func (tx *Text) String() string

String returns text content.

func (*Text) Write 

func (tx *Text) Write(p []byte) (n int, err error)

Write writes specified data as text to text area.

type Textbox 

type Textbox struct {
	// contains filtered or unexported fields
}

Struct for textboxes.

func NewTextbox 

func NewTextbox(params Params) *Textbox

NewTextbox creates new textbox with specified parameters.

func (*Textbox) AddText 

func (tb *Textbox) AddText(text string)

AddText adds specified text to box.

func (*Textbox) AtBottom 

func (tb *Textbox) AtBottom() bool

AtBottom checks if textbox is scrolled to the bottom.

func (*Textbox) Clear 

func (tb *Textbox) Clear()

Clear clears textbox.

func (*Textbox) Draw 

func (tb *Textbox) Draw(t pixel.Target, matrix pixel.Matrix)

Draw draws textbox.

func (*Textbox) DrawArea 

func (t *Textbox) DrawArea() pixel.Rect

DrawArea returns current draw area of text box background.

func (*Textbox) Focus 

func (tb *Textbox) Focus(focus bool)

Focus sets/removes focus from textbox.

func (*Textbox) Focused 

func (tb *Textbox) Focused() bool

Focused checks if textbox is focused.

func (*Textbox) ScrollBottom 

func (tb *Textbox) ScrollBottom()

ScrollBottom scrolls textbox to last lines of text content.

func (*Textbox) SetDownButtonBackground 

func (tb *Textbox) SetDownButtonBackground(s *pixel.Sprite)

SetDownButtonBackground sets specified sprite as scroll down button background.

func (*Textbox) SetMaxTextWidth 

func (tb *Textbox) SetMaxTextWidth(width float64)

SetMaxTextWidth sets maximal width of single line in text area.

func (*Textbox) SetSize 

func (tb *Textbox) SetSize(s pixel.Vec)

SetSize sets background size.

func (*Textbox) SetText 

func (tb *Textbox) SetText(text ...string)

SetText clears textbox and inserts specified lines of text.

func (*Textbox) SetUpButtonBackground 

func (tb *Textbox) SetUpButtonBackground(s *pixel.Sprite)

SetUpButtonBackground sets specified sprite as scroll up button background.

func (*Textbox) Size 

func (tb *Textbox) Size() pixel.Vec

Size returns size of textbox background.

func (*Textbox) String 

func (tb *Textbox) String() string

String returns textbox content.

func (*Textbox) TextSize 

func (tb *Textbox) TextSize() pixel.Vec

TextSize returns size of text content.

func (*Textbox) Update 

func (tb *Textbox) Update(win *Window)

Update handles key events.

type Textedit 

type Textedit struct {
	// contains filtered or unexported fields
}

Struct for text edit fields.

func NewTextedit 

func NewTextedit(params Params) *Textedit

NewTextedit creates new textedit based on specified parameters.

func (*Textedit) Active 

func (te *Textedit) Active(active bool)

Active toggles field activity.

func (*Textedit) Clear 

func (te *Textedit) Clear()

Clear clears text edit input.

func (*Textedit) Disabled 

func (te *Textedit) Disabled() bool

Disabled checks whether field is disabled.

func (*Textedit) Draw 

func (te *Textedit) Draw(t pixel.Target, matrix pixel.Matrix)

Draw draws text edit.

func (*Textedit) DrawArea 

func (te *Textedit) DrawArea() pixel.Rect

DrawArea returns current draw area rectangle.

func (*Textedit) Focus 

func (te *Textedit) Focus(focus bool)

Focus sets or removes focus from text edit.

func (*Textedit) Focused 

func (te *Textedit) Focused() bool

Focused checks whether text edit is focused.

func (*Textedit) SetSize 

func (te *Textedit) SetSize(size pixel.Vec)

SetSize sets text edit size.

func (*Textedit) SetText 

func (te *Textedit) SetText(text string)

SetText sets specified text as current value of text edit field.

func (*Textedit) Size 

func (te *Textedit) Size() pixel.Vec

Size returns text edit size.

func (*Textedit) Text 

func (te *Textedit) Text() string

Text return current value of text edit.

func (*Textedit) Update 

func (te *Textedit) Update(win *Window)

Update updates text edit.

type Window 

type Window struct {
	*pixelgl.Window
	// contains filtered or unexported fields
}

Wrapper struct for pixel window, to provide scalability.

func NewWindow 

func NewWindow(conf pixelgl.WindowConfig) (*Window, error)

NewWindow creates new MTK window.

func (*Window) Delta 

func (w *Window) Delta() int64

Delta returns time from last window update in milliseconds.

func (*Window) FPS 

func (w *Window) FPS() int

FPS returns current frame per second value.

func (*Window) PointBL 

func (w *Window) PointBL() pixel.Vec

PointBL returns position of bottom left corner of window.

func (*Window) PointBR 

func (w *Window) PointBR() pixel.Vec

PointBR returns position of bottom right corner of window.

func (*Window) PointTL 

func (w *Window) PointTL() pixel.Vec

PointTL returns position of top left corner of window.

func (*Window) SetMaxFPS 

func (w *Window) SetMaxFPS(fps int)

SetMaxFPS sets maximal value for window FPS. Value <= 0 removes FPS limit.

func (*Window) Update 

func (w *Window) Update()

Update updates window.

Source Files

View all Source files

Directories

Path Synopsis
example
animation
Example for creating simple MTK animation.
 Example for creating simple MTK animation.
audioplayer/control
Example of controlling audio player.
 Example of controlling audio player.
audioplayer/play
Example of using audio player.
 Example of using audio player.
button
Example for creating simple MTK button with draw background, custom on-click function, and click sound effect.
 Example for creating simple MTK button with draw background, custom on-click function, and click sound effect.
list
Example of creating and using list.
 Example of creating and using list.
messagequeue
Example for the MTK Message Queue.
 Example for the MTK Message Queue.
messagewindow
Example for creating MTK message window.
 Example for creating MTK message window.
slot
Example of creating and using slot.
 Example of creating and using slot.
switch/number
Example for creating MTK switch with number values.
 Example for creating MTK switch with number values.
switch/toggle
Example for creating MTK switch.
 Example for creating MTK switch.
text
Example of creating text to draw.
 Example of creating text to draw.
textbox
Example of creating and using MTK textbox.
 Example of creating and using MTK textbox.
textedit
Example of creating and using MTK textedit.
 Example of creating and using MTK textedit.
window
Example of creating MTK window.
 Example of creating MTK window.

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