467 lines
12 KiB
Go
467 lines
12 KiB
Go
package d2ui
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import (
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"fmt"
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"image"
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"log"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2enum"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2resource"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2util"
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"github.com/OpenDiablo2/OpenDiablo2/d2core/d2gui"
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)
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// ButtonType defines the type of button
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type ButtonType int
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// ButtonType constants
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const (
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ButtonTypeWide ButtonType = 1
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ButtonTypeMedium ButtonType = 2
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ButtonTypeNarrow ButtonType = 3
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ButtonTypeCancel ButtonType = 4
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ButtonTypeTall ButtonType = 5
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ButtonTypeShort ButtonType = 6
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ButtonTypeOkCancel ButtonType = 7
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// Game UI
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ButtonTypeSkill ButtonType = 7
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ButtonTypeRun ButtonType = 8
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ButtonTypeMenu ButtonType = 9
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ButtonTypeGoldCoin ButtonType = 10
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ButtonTypeClose ButtonType = 11
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ButtonTypeSecondaryInvHand ButtonType = 12
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ButtonTypeMinipanelCharacter ButtonType = 13
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ButtonTypeMinipanelInventory ButtonType = 14
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ButtonTypeMinipanelSkill ButtonType = 15
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ButtonTypeMinipanelAutomap ButtonType = 16
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ButtonTypeMinipanelMessage ButtonType = 17
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ButtonTypeMinipanelQuest ButtonType = 18
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ButtonTypeMinipanelMen ButtonType = 19
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ButtonTypeSquareClose ButtonType = 20
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)
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const (
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greyAlpha100 = 0x646464ff
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lightGreyAlpha75 = 0x808080c3
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)
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// ButtonLayout defines the type of buttons
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type ButtonLayout struct {
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ResourceName string
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PaletteName string
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FontPath string
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XSegments int
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YSegments int
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BaseFrame int
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DisabledFrame int
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ClickableRect *image.Rectangle
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TextOffset int
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Toggleable bool
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AllowFrameChange bool
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}
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const (
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buttonWideSegmentsX = 2
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buttonWideSegmentsY = 1
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buttonWideDisabledFrame = -1
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buttonWideTextOffset = 1
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buttonShortSegmentsX = 1
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buttonShortSegmentsY = 1
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buttonShortDisabledFrame = -1
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buttonShortTextOffset = -1
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buttonMediumSegmentsX = 1
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buttonMediumSegmentsY = 1
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buttonTallSegmentsX = 1
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buttonTallSegmentsY = 1
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buttonTallTextOffset = 5
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buttonOkCancelSegmentsX = 1
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buttonOkCancelSegmentsY = 1
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buttonOkCancelDisabledFrame = -1
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buttonBuySellSegmentsX = 1
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buttonBuySellSegmentsY = 1
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buttonBuySellDisabledFrame = 1
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buttonRunSegmentsX = 1
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buttonRunSegmentsY = 1
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buttonRunDisabledFrame = -1
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pressedButtonOffset = 2
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)
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func getButtonLayouts() map[ButtonType]ButtonLayout {
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return map[ButtonType]ButtonLayout{
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ButtonTypeWide: {
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XSegments: buttonWideSegmentsX,
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YSegments: buttonWideSegmentsY,
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DisabledFrame: buttonWideDisabledFrame,
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TextOffset: buttonWideTextOffset,
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ResourceName: d2resource.WideButtonBlank,
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PaletteName: d2resource.PaletteUnits,
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FontPath: d2resource.FontExocet10,
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AllowFrameChange: true,
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},
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ButtonTypeShort: {
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XSegments: buttonShortSegmentsX,
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YSegments: buttonShortSegmentsY,
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DisabledFrame: buttonShortDisabledFrame,
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TextOffset: buttonShortTextOffset,
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ResourceName: d2resource.ShortButtonBlank,
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PaletteName: d2resource.PaletteUnits,
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FontPath: d2resource.FontRediculous,
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AllowFrameChange: true,
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},
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ButtonTypeMedium: {
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XSegments: buttonMediumSegmentsX,
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YSegments: buttonMediumSegmentsY,
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ResourceName: d2resource.MediumButtonBlank,
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PaletteName: d2resource.PaletteUnits,
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FontPath: d2resource.FontExocet10,
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AllowFrameChange: true,
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},
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ButtonTypeTall: {
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XSegments: buttonTallSegmentsX,
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YSegments: buttonTallSegmentsY,
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TextOffset: buttonTallTextOffset,
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ResourceName: d2resource.TallButtonBlank,
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PaletteName: d2resource.PaletteUnits,
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FontPath: d2resource.FontExocet10,
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AllowFrameChange: true,
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},
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ButtonTypeOkCancel: {
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XSegments: buttonOkCancelSegmentsX,
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YSegments: buttonOkCancelSegmentsY,
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DisabledFrame: buttonOkCancelDisabledFrame,
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ResourceName: d2resource.CancelButton,
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PaletteName: d2resource.PaletteUnits,
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FontPath: d2resource.FontRediculous,
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AllowFrameChange: true,
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},
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ButtonTypeRun: {
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XSegments: buttonRunSegmentsX,
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YSegments: buttonRunSegmentsY,
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DisabledFrame: buttonRunDisabledFrame,
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ResourceName: d2resource.RunButton,
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PaletteName: d2resource.PaletteSky,
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Toggleable: true,
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FontPath: d2resource.FontRediculous,
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AllowFrameChange: true,
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},
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ButtonTypeSquareClose: {
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XSegments: buttonBuySellSegmentsX,
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YSegments: buttonBuySellSegmentsY,
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DisabledFrame: buttonBuySellDisabledFrame,
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ResourceName: d2resource.BuySellButton,
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PaletteName: d2resource.PaletteUnits,
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Toggleable: true,
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FontPath: d2resource.Font30,
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AllowFrameChange: true,
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BaseFrame: 10,
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},
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}
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}
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var _ Widget = &Button{} // static check to ensure button implements widget
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// Button defines a standard wide UI button
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type Button struct {
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manager *UIManager
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buttonLayout ButtonLayout
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normalSurface d2interface.Surface
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pressedSurface d2interface.Surface
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toggledSurface d2interface.Surface
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pressedToggledSurface d2interface.Surface
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disabledSurface d2interface.Surface
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x int
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y int
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width int
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height int
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onClick func()
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enabled bool
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visible bool
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pressed bool
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toggled bool
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}
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// NewButton creates an instance of Button
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func (ui *UIManager) NewButton(buttonType ButtonType, text string) *Button {
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btn := &Button{
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width: 0,
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height: 0,
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visible: true,
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enabled: true,
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pressed: false,
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}
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buttonLayout := getButtonLayouts()[buttonType]
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btn.buttonLayout = buttonLayout
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lbl := ui.NewLabel(buttonLayout.FontPath, d2resource.PaletteUnits)
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lbl.SetText(text)
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lbl.Color[0] = d2util.Color(greyAlpha100)
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lbl.Alignment = d2gui.HorizontalAlignCenter
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buttonSprite, err := ui.NewSprite(buttonLayout.ResourceName, buttonLayout.PaletteName)
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if err != nil {
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log.Print(err)
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return nil
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}
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for i := 0; i < buttonLayout.XSegments; i++ {
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w, _, err := buttonSprite.GetFrameSize(i)
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if err != nil {
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log.Print(err)
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return nil
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}
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btn.width += w
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}
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for i := 0; i < buttonLayout.YSegments; i++ {
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_, h, err := buttonSprite.GetFrameSize(i * buttonLayout.YSegments)
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if err != nil {
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log.Print(err)
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return nil
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}
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btn.height += h
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}
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btn.normalSurface, err = ui.renderer.NewSurface(btn.width, btn.height, d2enum.FilterNearest)
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if err != nil {
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log.Print(err)
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return nil
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}
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buttonSprite.SetPosition(0, 0)
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buttonSprite.SetEffect(d2enum.DrawEffectModulate)
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ui.addWidget(btn) // important that this comes before renderFrames!
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btn.renderFrames(buttonSprite, &buttonLayout, lbl)
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return btn
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}
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func (v *Button) renderFrames(btnSprite *Sprite, btnLayout *ButtonLayout, label *Label) {
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var err error
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totalButtonTypes := btnSprite.GetFrameCount() / (btnLayout.XSegments * btnLayout.YSegments)
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err = btnSprite.RenderSegmented(v.normalSurface, btnLayout.XSegments, btnLayout.YSegments, btnLayout.BaseFrame)
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if err != nil {
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fmt.Printf("failed to render button normalSurface, err: %v\n", err)
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}
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_, labelHeight := label.GetSize()
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textY := half(v.height - labelHeight)
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xOffset := half(v.width)
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label.SetPosition(xOffset, textY)
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label.Render(v.normalSurface)
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if btnLayout.AllowFrameChange {
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frameOffset := 0
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xSeg, ySeg, baseFrame := btnLayout.XSegments, btnLayout.YSegments, btnLayout.BaseFrame
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totalButtonTypes--
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if totalButtonTypes > 0 { // button has more than one type
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frameOffset++
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v.pressedSurface, err = v.manager.renderer.NewSurface(v.width, v.height,
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d2enum.FilterNearest)
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if err != nil {
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log.Print(err)
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}
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err = btnSprite.RenderSegmented(v.pressedSurface, xSeg, ySeg, baseFrame+frameOffset)
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if err != nil {
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fmt.Printf("failed to render button pressedSurface, err: %v\n", err)
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}
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label.SetPosition(xOffset-pressedButtonOffset, textY+pressedButtonOffset)
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label.Render(v.pressedSurface)
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}
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if btnLayout.ResourceName == d2resource.BuySellButton {
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// Without returning early, the button UI gets all subsequent (unrelated) frames stacked on top
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// Only 2 frames from this sprite are applicable to the button in question
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// The presentation is incorrect without this hack
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return
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}
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totalButtonTypes--
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if totalButtonTypes > 0 { // button has more than two types
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frameOffset++
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v.toggledSurface, err = v.manager.renderer.NewSurface(v.width, v.height,
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d2enum.FilterNearest)
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if err != nil {
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log.Print(err)
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}
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err = btnSprite.RenderSegmented(v.pressedSurface, xSeg, ySeg, baseFrame+frameOffset)
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if err != nil {
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fmt.Printf("failed to render button toggledSurface, err: %v\n", err)
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}
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label.SetPosition(xOffset, textY)
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label.Render(v.toggledSurface)
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}
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totalButtonTypes--
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if totalButtonTypes > 0 { // button has more than three types
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frameOffset++
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v.pressedToggledSurface, err = v.manager.renderer.NewSurface(v.width, v.height,
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d2enum.FilterNearest)
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if err != nil {
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log.Print(err)
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}
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err = btnSprite.RenderSegmented(v.pressedSurface, xSeg, ySeg, baseFrame+frameOffset)
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if err != nil {
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fmt.Printf("failed to render button pressedToggledSurface, err: %v\n", err)
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}
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label.SetPosition(xOffset, textY)
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label.Render(v.pressedToggledSurface)
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}
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if btnLayout.DisabledFrame != -1 {
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v.disabledSurface, err = v.manager.renderer.NewSurface(v.width, v.height,
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d2enum.FilterNearest)
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if err != nil {
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log.Print(err)
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}
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err = btnSprite.RenderSegmented(v.disabledSurface, xSeg, ySeg, btnLayout.DisabledFrame)
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if err != nil {
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fmt.Printf("failed to render button disabledSurface, err: %v\n", err)
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}
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label.SetPosition(xOffset, textY)
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label.Render(v.disabledSurface)
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}
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}
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}
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// bindManager binds the button to the UI manager
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func (v *Button) bindManager(manager *UIManager) {
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v.manager = manager
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}
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// OnActivated defines the callback handler for the activate event
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func (v *Button) OnActivated(callback func()) {
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v.onClick = callback
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}
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// Activate calls the on activated callback handler, if any
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func (v *Button) Activate() {
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if v.onClick == nil {
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return
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}
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v.onClick()
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}
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// Render renders the button
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func (v *Button) Render(target d2interface.Surface) error {
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target.PushFilter(d2enum.FilterNearest)
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defer target.Pop()
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target.PushTranslation(v.x, v.y)
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defer target.Pop()
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var err error
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switch {
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case !v.enabled:
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target.PushColor(d2util.Color(lightGreyAlpha75))
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defer target.Pop()
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err = target.Render(v.disabledSurface)
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case v.toggled && v.pressed:
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err = target.Render(v.pressedToggledSurface)
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case v.pressed:
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err = target.Render(v.pressedSurface)
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case v.toggled:
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err = target.Render(v.toggledSurface)
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default:
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err = target.Render(v.normalSurface)
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}
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if err != nil {
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fmt.Printf("failed to render button surface, err: %v\n", err)
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}
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return nil
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}
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// Toggle negates the toggled state of the button
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func (v *Button) Toggle() {
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v.toggled = !v.toggled
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}
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// Advance advances the button state
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func (v *Button) Advance(_ float64) error {
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return nil
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}
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// GetEnabled returns the enabled state
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func (v *Button) GetEnabled() bool {
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return v.enabled
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}
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// SetEnabled sets the enabled state
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func (v *Button) SetEnabled(enabled bool) {
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v.enabled = enabled
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}
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// GetSize returns the size of the button
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func (v *Button) GetSize() (width, height int) {
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return v.width, v.height
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}
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// SetPosition moves the button
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func (v *Button) SetPosition(x, y int) {
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v.x = x
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v.y = y
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}
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// GetPosition returns the location of the button
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func (v *Button) GetPosition() (x, y int) {
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return v.x, v.y
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}
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// GetVisible returns the visibility of the button
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func (v *Button) GetVisible() bool {
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return v.visible
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}
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// SetVisible sets the visibility of the button
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func (v *Button) SetVisible(visible bool) {
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v.visible = visible
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}
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// GetPressed returns the pressed state of the button
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func (v *Button) GetPressed() bool {
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return v.pressed
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}
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// SetPressed sets the pressed state of the button
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func (v *Button) SetPressed(pressed bool) {
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v.pressed = pressed
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}
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func half(n int) int {
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return n / 2
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}
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