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Add scroll/pan support for Sta preview mode 

- Right-click drag to pan the canvas in static mode
- Scroll position (X/Y) persisted across sessions
- Uses independent zoom and scroll settings from One/All modes
This commit is contained in:
Cidwel Highwind 2026-04-04 12:42:34 +02:00
parent 00511eb8c1
commit 83645dbeae
1 changed files with 41 additions and 5 deletions
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46
aniphallow.lua
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@ -118,6 +118,12 @@ local S = {
previewLayoutValue = 2, -- number for fixed cols/rows
previewMode = "all", -- "all", "single", or "static"
previewSingleIdx = 1, -- which animation to show in single mode
-- Static preview scroll/pan
previewStaScrollX = 0,
previewStaScrollY = 0,
previewStaDragging = false,
previewStaDragLastX = 0,
previewStaDragLastY = 0,
-- Current preset
currentPreset = "Default",
}
@ -414,6 +420,8 @@ local function saveMaster()
f:write("previewZoomAll=" .. S.previewZoomAll .. "\n")
f:write("previewZoomOne=" .. S.previewZoomOne .. "\n")
f:write("previewZoomSta=" .. S.previewZoomSta .. "\n")
f:write("previewStaScrollX=" .. S.previewStaScrollX .. "\n")
f:write("previewStaScrollY=" .. S.previewStaScrollY .. "\n")
f:write("previewSingleIdx=" .. S.previewSingleIdx .. "\n")
-- File associations
for filepath, preset in pairs(filePresetMap) do
@ -442,6 +450,8 @@ local function loadMaster()
if k == "previewZoomAll" then S.previewZoomAll = tonumber(v) or DEFAULT_PREVIEW_ZOOM end
if k == "previewZoomOne" then S.previewZoomOne = tonumber(v) or DEFAULT_PREVIEW_ZOOM end
if k == "previewZoomSta" then S.previewZoomSta = tonumber(v) or DEFAULT_PREVIEW_ZOOM end
if k == "previewStaScrollX" then S.previewStaScrollX = tonumber(v) or 0 end
if k == "previewStaScrollY" then S.previewStaScrollY = tonumber(v) or 0 end
if k == "previewSingleIdx" then S.previewSingleIdx = tonumber(v) or 1 end
if k == "presetNames" and v ~= "" then
knownPresetNames = {}
@ -1407,21 +1417,23 @@ openPreviewWindow = function()
onpaint = function(ev)
local gc = ev.context
-- Static mode: render full sprite canvas
-- Static mode: render full sprite canvas with scroll offset
if S.previewMode == "static" then
if S.sourceImage then
local z = pvZoom()
local sx = S.previewStaScrollX
local sy = S.previewStaScrollY
local sw = S.sourceImage.width * z
local sh = S.sourceImage.height * z
if S.useBgColor then
gc.color = S.bgColor
gc:fillRect(Rectangle(0, 0, sw, sh))
gc:fillRect(Rectangle(sx, sy, sw, sh))
else
drawCheckerboard(gc, sw, sh, z, 0, 0)
drawCheckerboard(gc, sw, sh, z, sx, sy)
end
gc:drawImage(S.sourceImage,
Rectangle(0, 0, S.sourceImage.width, S.sourceImage.height),
Rectangle(0, 0, sw, sh))
Rectangle(sx, sy, sw, sh))
end
return
end
@ -1492,7 +1504,15 @@ openPreviewWindow = function()
end
end,
onmousedown = function(ev)
if S.previewMode == "static" then return end
-- Static mode: right-click drag to scroll
if S.previewMode == "static" then
if ev.button == MouseButton.RIGHT then
S.previewStaDragging = true
S.previewStaDragLastX = ev.x
S.previewStaDragLastY = ev.y
end
return
end
-- In single mode: L-click=prev anim, R-click=next anim
if S.previewMode == "single" then
if ev.button == MouseButton.LEFT then
@ -1518,6 +1538,22 @@ openPreviewWindow = function()
end
end
end,
onmousemove = function(ev)
if S.previewMode == "static" and S.previewStaDragging then
local dx = ev.x - S.previewStaDragLastX
local dy = ev.y - S.previewStaDragLastY
S.previewStaScrollX = S.previewStaScrollX + dx
S.previewStaScrollY = S.previewStaScrollY + dy
S.previewStaDragLastX = ev.x
S.previewStaDragLastY = ev.y
previewDlg:repaint()
end
end,
onmouseup = function(ev)
if S.previewMode == "static" then
S.previewStaDragging = false
end
end,
onwheel = function(ev)
local dz = ev.deltaY < 0 and 1 or -1
if S.previewMode == "single" then