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fit-to-content only if smaller size than bounding box

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HW
2011-12-11 23:34:38 +01:00
parent e0e422c75a
commit 16a5f40bc5
1 changed files with 29 additions and 19 deletions
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48
pdfreader.lua
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@@ -135,8 +135,9 @@ function PDFReader:setzoom(page)
local dc = pdf.newDC()
local pwidth, pheight = page:getSize(self.nulldc)
if self.globalzoommode == self.ZOOM_FIT_TO_PAGE then
self.globalzoom = width / pwidth ----------
if self.globalzoommode == self.ZOOM_FIT_TO_PAGE
or self.globalzoommode == self.ZOOM_FIT_TO_CONTENT then
self.globalzoom = width / pwidth
self.offset_x = 0
self.offset_y = (height - (self.globalzoom * pheight)) / 2
if height / pheight < self.globalzoom then
@@ -144,34 +145,43 @@ function PDFReader:setzoom(page)
self.offset_x = (width - (self.globalzoom * pwidth)) / 2
self.offset_y = 0
end
elseif self.globalzoommode == self.ZOOM_FIT_TO_PAGE_WIDTH then
elseif self.globalzoommode == self.ZOOM_FIT_TO_PAGE_WIDTH
or self.globalzoommode == self.ZOOM_FIT_TO_CONTENT_WIDTH then
self.globalzoom = width / pwidth
self.offset_x = 0
self.offset_y = (height - (self.globalzoom * pheight)) / 2
elseif self.globalzoommode == self.ZOOM_FIT_TO_PAGE_HEIGHT then
elseif self.globalzoommode == self.ZOOM_FIT_TO_PAGE_HEIGHT
or self.globalzoommode == self.ZOOM_FIT_TO_CONTENT_HEIGHT then
self.globalzoom = height / pheight
self.offset_x = (width - (self.globalzoom * pwidth)) / 2
self.offset_y = 0
elseif self.globalzoommode == self.ZOOM_FIT_TO_CONTENT then
end
if self.globalzoommode == self.ZOOM_FIT_TO_CONTENT then
local x0, y0, x1, y1 = page:getUsedBBox()
self.globalzoom = width / (x1 - x0)
self.offset_x = -1 * x0 * self.globalzoom
self.offset_y = -1 * y0 * self.globalzoom + (height - (self.globalzoom * (y1 - y0))) / 2
if height / (y1 - y0) < self.globalzoom then
if (x1 - x0) < pwidth then
self.globalzoom = width / (x1 - x0)
self.offset_x = -1 * x0 * self.globalzoom
self.offset_y = -1 * y0 * self.globalzoom + (height - (self.globalzoom * (y1 - y0))) / 2
if height / (y1 - y0) < self.globalzoom then
self.globalzoom = height / (y1 - y0)
self.offset_x = -1 * x0 * self.globalzoom + (width - (self.globalzoom * (x1 - x0))) / 2
self.offset_y = -1 * y0 * self.globalzoom
end
end
elseif self.globalzoommode == self.ZOOM_FIT_TO_CONTENT_WIDTH then
local x0, y0, x1, y1 = page:getUsedBBox()
if (x1 - x0) < pwidth then
self.globalzoom = width / (x1 - x0)
self.offset_x = -1 * x0 * self.globalzoom
self.offset_y = -1 * y0 * self.globalzoom + (height - (self.globalzoom * (y1 - y0))) / 2
end
elseif self.globalzoommode == self.ZOOM_FIT_TO_CONTENT_HEIGHT then
local x0, y0, x1, y1 = page:getUsedBBox()
if (y1 - y0) < pheight then
self.globalzoom = height / (y1 - y0)
self.offset_x = -1 * x0 * self.globalzoom + (width - (self.globalzoom * (x1 - x0))) / 2
self.offset_y = -1 * y0 * self.globalzoom
end
elseif self.globalzoommode == self.ZOOM_FIT_TO_CONTENT_WIDTH then
local x0, y0, x1, y1 = page:getUsedBBox()
self.globalzoom = width / (x1 - x0)
self.offset_x = -1 * x0 * self.globalzoom
self.offset_y = -1 * y0 * self.globalzoom + (height - (self.globalzoom * (y1 - y0))) / 2
elseif self.globalzoommode == self.ZOOM_FIT_TO_CONTENT_HEIGHT then
local x0, y0, x1, y1 = page:getUsedBBox()
self.globalzoom = height / (y1 - y0)
self.offset_x = -1 * x0 * self.globalzoom + (width - (self.globalzoom * (x1 - x0))) / 2
self.offset_y = -1 * y0 * self.globalzoom
end
dc:setZoom(self.globalzoom)
dc:setOffset(self.offset_x, self.offset_y)