|
| 1 | +package com.opensource.svgaplayer |
| 2 | + |
| 3 | +import android.widget.ImageView |
| 4 | + |
| 5 | +/** |
| 6 | + * Created by ubt on 2018/1/19. |
| 7 | + */ |
| 8 | +class ScaleEntity { |
| 9 | + var tranFx : Float = 0.0f |
| 10 | + var tranFy : Float = 0.0f |
| 11 | + var scaleFx : Float = 1.0f |
| 12 | + var scaleFy : Float = 1.0f |
| 13 | + var ratio = 1.0f |
| 14 | + var ratioX = false |
| 15 | + |
| 16 | + private fun resetVar(){ |
| 17 | + tranFx = 0.0f |
| 18 | + tranFy = 0.0f |
| 19 | + scaleFx = 1.0f |
| 20 | + scaleFy = 1.0f |
| 21 | + ratio = 1.0f |
| 22 | + ratioX = false |
| 23 | + } |
| 24 | + |
| 25 | + fun performScaleType(canvasWidth : Float, canvasHeight: Float, videoWidth : Float, videoHeight : Float, scaleType: ImageView.ScaleType) { |
| 26 | + if (canvasWidth == 0.0f || canvasHeight == 0.0f || videoWidth == 0.0f || videoHeight == 0.0f) { |
| 27 | + return |
| 28 | + } |
| 29 | + |
| 30 | + resetVar() |
| 31 | + val canW_vidW_f = (canvasWidth - videoWidth) / 2.0f |
| 32 | + val canH_vidH_f = (canvasHeight - videoHeight) / 2.0f |
| 33 | + |
| 34 | + val videoRatio = videoWidth / videoHeight |
| 35 | + val canvasRatio = canvasWidth / canvasHeight |
| 36 | + |
| 37 | + val canH_d_vidH = canvasHeight / videoHeight |
| 38 | + val canW_d_vidW = canvasWidth / videoWidth |
| 39 | + |
| 40 | + when (scaleType) { |
| 41 | + ImageView.ScaleType.CENTER -> { |
| 42 | + tranFx = canW_vidW_f |
| 43 | + tranFy = canH_vidH_f |
| 44 | + } |
| 45 | + ImageView.ScaleType.CENTER_CROP -> { |
| 46 | + if (videoRatio > canvasRatio) { |
| 47 | + ratio = canH_d_vidH |
| 48 | + ratioX = false |
| 49 | + scaleFx = canH_d_vidH |
| 50 | + scaleFy = canH_d_vidH |
| 51 | + tranFx = (canvasWidth - videoWidth * (canH_d_vidH)) / 2.0f |
| 52 | + } |
| 53 | + else { |
| 54 | + ratio = canW_d_vidW |
| 55 | + ratioX = true |
| 56 | + scaleFx = canW_d_vidW |
| 57 | + scaleFy = canW_d_vidW |
| 58 | + tranFy = (canvasHeight - videoHeight * (canW_d_vidW)) / 2.0f |
| 59 | + } |
| 60 | + } |
| 61 | + ImageView.ScaleType.CENTER_INSIDE -> { |
| 62 | + if (videoWidth < canvasWidth && videoHeight < canvasHeight) { |
| 63 | + tranFx = canW_vidW_f |
| 64 | + tranFy = canH_vidH_f |
| 65 | + } |
| 66 | + else { |
| 67 | + if (videoRatio > canvasRatio) { |
| 68 | + ratio = canW_d_vidW |
| 69 | + ratioX = true |
| 70 | + scaleFx = canW_d_vidW |
| 71 | + scaleFy = canW_d_vidW |
| 72 | + tranFy = (canvasHeight - videoHeight * (canW_d_vidW)) / 2.0f |
| 73 | + |
| 74 | + } |
| 75 | + else { |
| 76 | + ratio = canH_d_vidH |
| 77 | + ratioX = false |
| 78 | + scaleFx = canH_d_vidH |
| 79 | + scaleFy = canH_d_vidH |
| 80 | + tranFx = (canvasWidth - videoWidth * (canH_d_vidH)) / 2.0f |
| 81 | + } |
| 82 | + } |
| 83 | + } |
| 84 | + ImageView.ScaleType.FIT_CENTER -> { |
| 85 | + if (videoRatio > canvasRatio) { |
| 86 | + ratio = canW_d_vidW |
| 87 | + ratioX = true |
| 88 | + scaleFx = canW_d_vidW |
| 89 | + scaleFy = canW_d_vidW |
| 90 | + tranFy = (canvasHeight - videoHeight * (canW_d_vidW)) / 2.0f |
| 91 | + } |
| 92 | + else { |
| 93 | + ratio = canH_d_vidH |
| 94 | + ratioX = false |
| 95 | + scaleFx = canH_d_vidH |
| 96 | + scaleFy = canH_d_vidH |
| 97 | + tranFx = (canvasWidth - videoWidth * (canH_d_vidH)) / 2.0f |
| 98 | + } |
| 99 | + } |
| 100 | + ImageView.ScaleType.FIT_START -> { |
| 101 | + if (videoRatio > canvasRatio) { |
| 102 | + ratio = canW_d_vidW |
| 103 | + ratioX = true |
| 104 | + scaleFx = canW_d_vidW |
| 105 | + scaleFy = canW_d_vidW |
| 106 | + } |
| 107 | + else { |
| 108 | + ratio = canH_d_vidH |
| 109 | + ratioX = false |
| 110 | + scaleFx = canH_d_vidH |
| 111 | + scaleFy = canH_d_vidH |
| 112 | + } |
| 113 | + } |
| 114 | + ImageView.ScaleType.FIT_END -> { |
| 115 | + if (videoRatio > canvasRatio) { |
| 116 | + ratio = canW_d_vidW |
| 117 | + ratioX = true |
| 118 | + scaleFx = canW_d_vidW |
| 119 | + scaleFy = canW_d_vidW |
| 120 | + tranFy= canvasHeight - videoHeight * (canW_d_vidW) |
| 121 | + } |
| 122 | + else { |
| 123 | + ratio = canH_d_vidH |
| 124 | + ratioX = false |
| 125 | + scaleFx = canH_d_vidH |
| 126 | + scaleFy = canH_d_vidH |
| 127 | + tranFx = canvasWidth - videoWidth * (canH_d_vidH) |
| 128 | + } |
| 129 | + } |
| 130 | + ImageView.ScaleType.FIT_XY -> { |
| 131 | + ratio = Math.max(canW_d_vidW, canH_d_vidH) |
| 132 | + ratioX = canW_d_vidW > canH_d_vidH |
| 133 | + scaleFx = canW_d_vidW |
| 134 | + scaleFy = canH_d_vidH |
| 135 | + } |
| 136 | + else -> { |
| 137 | + ratio = canW_d_vidW |
| 138 | + ratioX = true |
| 139 | + scaleFx = canW_d_vidW |
| 140 | + scaleFy = canW_d_vidW |
| 141 | + } |
| 142 | + } |
| 143 | + } |
| 144 | + |
| 145 | +} |
0 commit comments