-
Notifications
You must be signed in to change notification settings - Fork 0
/
imageView.go
206 lines (157 loc) · 6.02 KB
/
imageView.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
package main
import (
"github.com/barasher/go-exiftool"
"github.com/gotk3/gotk3/gdk"
"github.com/gotk3/gotk3/gtk"
)
const SCALE_FACTOR = 1.5
type ImageView struct {
box, boxLeft, boxRight *gtk.Box
scrolledWindow *gtk.ScrolledWindow
zoomView *ZoomView
image *gtk.Image
pixbuf_orig *gdk.Pixbuf
imagePath string
newImagePath string
currHeight, currWidth int
xOffset, yOffset float64
}
func NewImageView() *ImageView {
iv := &ImageView{}
iv.box, err = gtk.BoxNew(gtk.ORIENTATION_HORIZONTAL, 10)
check_error("Unable to create scrolled window", err)
iv.zoomView = NewZoomView()
iv.boxLeft, err = gtk.BoxNew(gtk.ORIENTATION_VERTICAL, 0)
check_error("Unable to create box", err)
iv.boxLeft.SetHExpand(true)
iv.boxRight, err = gtk.BoxNew(gtk.ORIENTATION_VERTICAL, 0)
check_error("Unable to create box", err)
iv.scrolledWindow, err = gtk.ScrolledWindowNew(nil, nil)
check_error("Unable to create ScrolledWindow", err)
iv.scrolledWindow.SetHExpand(true)
iv.scrolledWindow.SetVExpand(true)
iv.image, err = gtk.ImageNew()
check_error("Unable to create image", err)
iv.image.SetCanFocus(false)
iv.box.SetSizeRequest(1920, 1080)
iv.scrolledWindow.AddEvents(int(gdk.BUTTON_PRESS_MASK | gdk.BUTTON1_MOTION_MASK))
iv.image.Connect("draw", iv.draw)
iv.scrolledWindow.Connect("button-press-event", iv.onButtonPress)
iv.scrolledWindow.Connect("motion-notify-event", iv.onDrag)
iv.scrolledWindow.Add(iv.image)
iv.boxLeft.Add(iv.scrolledWindow)
// iv.boxLeft.Add(iv.image)
iv.boxRight.Add(iv.zoomView.box)
iv.box.PackStart(iv.boxLeft, true, true, 10)
iv.box.PackStart(iv.boxRight, true, true, 10)
return iv
}
func (iv *ImageView) draw(img *gtk.Image) {
boxHeight := iv.boxLeft.GetAllocatedHeight()
boxWidth := iv.boxLeft.GetAllocatedWidth()
if (iv.imagePath != iv.newImagePath) || (iv.currHeight != boxHeight) || (iv.currWidth != boxWidth) {
// load image
img.SetFromFile(iv.newImagePath)
iv.pixbuf_orig = nil
iv.pixbuf_orig = img.GetPixbuf()
// Rotate image if needed (based on EXIF data)
iv.pixbuf_orig = rotatePixbuf(iv.newImagePath, iv.pixbuf_orig)
iv.zoomView.pixbuf_orig = iv.pixbuf_orig
// Reset values
iv.imagePath = iv.newImagePath
imageRatio := float64(iv.pixbuf_orig.GetWidth()) / float64(iv.pixbuf_orig.GetHeight())
newHeight := boxHeight
newWidthFromHeight := int(float64(newHeight) * imageRatio)
newWidth := boxWidth
newHeightFromWidth := int(float64(newWidth) / imageRatio)
if newHeight <= boxHeight && newWidthFromHeight <= boxWidth {
newWidth = newWidthFromHeight
} else {
newHeight = newHeightFromWidth
}
pixbuf, err := iv.pixbuf_orig.ScaleSimple(newWidth, newHeight, gdk.INTERP_BILINEAR)
check_error("Unable to scale pixbuf", err)
img.SetFromPixbuf(pixbuf)
iv.xOffset = float64(boxWidth-newWidth) / 2
iv.yOffset = float64(boxHeight-newHeight) / 2
iv.zoomView.zoomVal = float64(iv.pixbuf_orig.GetWidth()) / float64(newWidth)
iv.zoomView.zoomVal = float64(iv.pixbuf_orig.GetHeight()) / float64(newHeight)
iv.zoomView.QueueDraw()
}
iv.currHeight = boxHeight
iv.currWidth = boxWidth
}
func (iv *ImageView) onButtonPress(sw *gtk.ScrolledWindow, event *gdk.Event) {
buttonEvent := gdk.EventButtonNewFromEvent(event)
if buttonEvent.Button() == gdk.BUTTON_PRIMARY {
log.Debug("Button Pressed")
x, y := buttonEvent.MotionVal()
iv.zoomView.valPosX, iv.zoomView.valPosY = (x-iv.xOffset)/(float64(iv.boxLeft.GetAllocatedWidth())-2*iv.xOffset), (y-iv.yOffset)/(float64(iv.boxLeft.GetAllocatedHeight())-2*iv.yOffset)
iv.zoomView.QueueDraw()
}
}
func (iv *ImageView) onDrag(sw *gtk.ScrolledWindow, event *gdk.Event) {
dragEvent := gdk.EventMotionNewFromEvent(event)
if dragEvent.State()&gdk.BUTTON1_MASK != 0 {
log.Debug("Dragging")
x, y := dragEvent.MotionVal()
iv.zoomView.valPosX, iv.zoomView.valPosY = (x-iv.xOffset)/(float64(iv.boxLeft.GetAllocatedWidth())-2*iv.xOffset), (y-iv.yOffset)/(float64(iv.boxLeft.GetAllocatedHeight())-2*iv.yOffset)
iv.zoomView.QueueDraw()
}
}
func rotatePixbuf(filepath string, pixbuf *gdk.Pixbuf) *gdk.Pixbuf {
// Implement rotation logic here if needed
metadata := et.ExtractMetadata(filepath)
rot, err := metadata[0].GetString("Orientation")
if err == exiftool.ErrKeyNotFound {
log.Debug("No orientation found. Defaulting to Horizontal (normal)")
rot = "Horizontal (normal)"
err = nil
}
// 1 = Horizontal (normal)
// 2 = Mirror horizontal
// 3 = Rotate 180
// 4 = Mirror vertical
// 5 = Mirror horizontal and rotate 270 CW
// 6 = Rotate 90 CW
// 7 = Mirror horizontal and rotate 90 CW
// 8 = Rotate 270 CW
switch rot {
case "Horizontal (normal)":
// Do nothing
case "Mirror horizontal":
pixbuf, err = pixbuf.Flip(true)
check_error("Unable to flip pixbuf", err)
case "Rotate 180":
pixbuf, err = pixbuf.RotateSimple(gdk.PIXBUF_ROTATE_UPSIDEDOWN)
check_error("Unable to rotate pixbuf", err)
case "Mirror vertical":
pixbuf, err = pixbuf.Flip(false)
check_error("Unable to flip pixbuf", err)
case "Mirror horizontal and rotate 270 CW":
pixbuf, err = pixbuf.RotateSimple(gdk.PIXBUF_ROTATE_CLOCKWISE)
check_error("Unable to rotate pixbuf", err)
pixbuf, err = pixbuf.Flip(true)
check_error("Unable to flip pixbuf", err)
case "Rotate 90 CW":
pixbuf, err = pixbuf.RotateSimple(gdk.PIXBUF_ROTATE_CLOCKWISE)
check_error("Unable to rotate pixbuf", err)
case "Mirror horizontal and rotate 90 CW":
pixbuf, err = pixbuf.RotateSimple(gdk.PIXBUF_ROTATE_COUNTERCLOCKWISE)
check_error("Unable to rotate pixbuf", err)
pixbuf, err = pixbuf.Flip(true)
check_error("Unable to flip pixbuf", err)
case "Rotate 270 CW":
pixbuf, err = pixbuf.RotateSimple(gdk.PIXBUF_ROTATE_COUNTERCLOCKWISE)
check_error("Unable to rotate pixbuf", err)
}
return pixbuf
}
func setupImageView() *ImageView {
return NewImageView()
}
func refreshImageView() {
imageView.newImagePath = imageRawToDispMap[currRAWImagePath]
log.Debug("Refreshing image view with new image path: ", imageView.newImagePath, "from raw path: ", currRAWImagePath)
imageView.image.QueueDraw()
}