mirror of
https://github.com/koreader/koreader
synced 2024-11-10 01:10:34 +00:00
fadee1f5dc
Basically: * Use `extend` for class definitions * Use `new` for object instantiations That includes some minor code cleanups along the way: * Updated `Widget`'s docs to make the semantics clearer. * Removed `should_restrict_JIT` (it's been dead code since https://github.com/koreader/android-luajit-launcher/pull/283) * Minor refactoring of LuaSettings/LuaData/LuaDefaults/DocSettings to behave (mostly, they are instantiated via `open` instead of `new`) like everything else and handle inheritance properly (i.e., DocSettings is now a proper LuaSettings subclass). * Default to `WidgetContainer` instead of `InputContainer` for stuff that doesn't actually setup key/gesture events. * Ditto for explicit `*Listener` only classes, make sure they're based on `EventListener` instead of something uselessly fancier. * Unless absolutely necessary, do not store references in class objects, ever; only values. Instead, always store references in instances, to avoid both sneaky inheritance issues, and sneaky GC pinning of stale references. * ReaderUI: Fix one such issue with its `active_widgets` array, with critical implications, as it essentially pinned *all* of ReaderUI's modules, including their reference to the `Document` instance (i.e., that was a big-ass leak). * Terminal: Make sure the shell is killed on plugin teardown. * InputText: Fix Home/End/Del physical keys to behave sensibly. * InputContainer/WidgetContainer: If necessary, compute self.dimen at paintTo time (previously, only InputContainers did, which might have had something to do with random widgets unconcerned about input using it as a baseclass instead of WidgetContainer...). * OverlapGroup: Compute self.dimen at *init* time, because for some reason it needs to do that, but do it directly in OverlapGroup instead of going through a weird WidgetContainer method that it was the sole user of. * ReaderCropping: Under no circumstances should a Document instance member (here, self.bbox) risk being `nil`ed! * Kobo: Minor code cleanups.
70 lines
2.0 KiB
Lua
70 lines
2.0 KiB
Lua
local Document = require("document/document")
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local DrawContext = require("ffi/drawcontext")
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local CanvasContext = require("document/canvascontext")
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local pic = nil
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local PicDocument = Document:extend{
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_document = false,
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is_pic = true,
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dc_null = DrawContext.new(),
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provider = "picdocument",
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provider_name = "Picture Document",
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}
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function PicDocument:init()
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self:updateColorRendering()
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if not pic then pic = require("ffi/pic") end
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-- pic.color needs to be true before opening document to allow toggling color
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pic.color = CanvasContext.is_color_rendering_enabled
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local ok
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ok, self._document = pcall(pic.openDocument, self.file)
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if not ok then
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error("Failed to open image:" .. self._document)
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end
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self.is_open = true
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self.info.has_pages = true
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self.info.configurable = false
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-- Enforce dithering in PicDocument
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if CanvasContext:hasEinkScreen() then
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if CanvasContext:canHWDither() then
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self.hw_dithering = true
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elseif CanvasContext.fb_bpp == 8 then
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self.sw_dithering = true
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end
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end
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self:_readMetadata()
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end
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function PicDocument:getUsedBBox(pageno)
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return { x0 = 0, y0 = 0, x1 = self._document.width, y1 = self._document.height }
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end
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function PicDocument:getProps()
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local _, _, docname = self.file:find(".*/(.*)")
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docname = docname or self.file
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return {
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title = docname:match("(.*)%."),
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}
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end
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function PicDocument:getCoverPageImage()
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local first_page = self._document:openPage(1)
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if first_page.image_bb then
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return first_page.image_bb:copy()
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end
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return nil
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end
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function PicDocument:register(registry)
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registry:addProvider("gif", "image/gif", self, 100)
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registry:addProvider("jpg", "image/jpeg", self, 80)
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registry:addProvider("jpeg", "image/jpeg", self, 80)
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registry:addProvider("png", "image/png", self, 80)
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registry:addProvider("webp", "image/webp", self, 80)
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end
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return PicDocument
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