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Various fixes for rendering of images in the diff view

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This commit is contained in:
Kovid Goyal 2014-01-26 16:14:31 +05:30
parent 8aa827baf6
commit c6b9425571
1 changed files with 15 additions and 9 deletions
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24
src/calibre/gui2/tweak_book/diff/view.py
View File

@ -50,6 +50,7 @@ class TextBrowser(PlainTextEdit): # {{{
def __init__(self, right=False, parent=None):
PlainTextEdit.__init__(self, parent)
self.side_margin = 0
self.setContextMenuPolicy(Qt.CustomContextMenu)
self.customContextMenuRequested.connect(self.show_context_menu)
self.setFocusPolicy(Qt.NoFocus)
@ -149,10 +150,15 @@ class TextBrowser(PlainTextEdit): # {{{
self.setHorizontalScrollBarPolicy(Qt.ScrollBarAsNeeded)
def update_line_number_area_width(self, block_count=0):
self.side_margin = self.line_number_area_width()
if self.right:
self.setViewportMargins(0, 0, self.line_number_area_width(), 0)
self.setViewportMargins(0, 0, self.side_margin, 0)
else:
self.setViewportMargins(self.line_number_area_width(), 0, 0, 0)
self.setViewportMargins(self.side_margin, 0, 0, 0)
def available_width(self):
fw = QApplication.style().pixelMetric(QStyle.PM_DefaultFrameWidth)
return self.width() - fw - self.side_margin
def line_number_area_width(self):
digits = 1
@ -219,7 +225,7 @@ class TextBrowser(PlainTextEdit): # {{{
num += 1
def paintEvent(self, event):
w = self.width()
w = event.rect().width()
painter = QPainter(self.viewport())
painter.setClipRect(event.rect())
floor = event.rect().bottom()
@ -261,7 +267,7 @@ class TextBrowser(PlainTextEdit): # {{{
if bot > top + 1 and not img.isNull():
y_top = self.blockBoundingGeometry(doc.findBlockByNumber(top+1)).translated(origin).y() + 3
y_bot -= 3
scaled, imgw, imgh = fit_image(img.width(), img.height(), maxw - 3, y_bot - y_top)
scaled, imgw, imgh = fit_image(img.width(), img.height(), w - 3, y_bot - y_top)
painter.setRenderHint(QPainter.SmoothPixmapTransform, True)
painter.drawPixmap(QRect(3, y_top, imgw, imgh), img)
@ -520,8 +526,7 @@ class DiffSplit(QSplitter): # {{{
for i in xrange(lines + 1):
c.insertBlock()
change.extend((start, c.block().blockNumber()))
if size > 0:
c.insertBlock()
c.insertBlock()
c.endEditBlock()
v.images[start] = (img, w, lines)
change.append('replace' if left_data and right_data else 'delete' if left_data else 'insert')
@ -538,9 +543,9 @@ class DiffSplit(QSplitter): # {{{
img, oldw, oldlines = v.images[top]
lines, w = self.get_lines_for_image(img, v)
if lines != oldlines:
changes.append((i, lines, lines - oldlines))
changes.append((i, lines, lines - oldlines, img, w))
for i, lines, delta in changes:
for i, lines, delta, img, w in changes:
top, bot, kind = v.changes[i]
c = QTextCursor(v.document().findBlockByNumber(top+1))
c.beginEditBlock()
@ -559,12 +564,13 @@ class DiffSplit(QSplitter): # {{{
mapnum(x):val for x, val in v.line_number_map.iteritems()}
v.changes = [(mapnum(t), mapnum(b), kind) for t, b, kind in v.changes]
v.headers = [(mapnum(x), name) for x, name in v.headers]
v.images = OrderedDict((mapnum(x), v) for x, v in v.images.iteritems())
def get_lines_for_image(self, img, view):
if img.isNull():
return 0, 0
w, h = img.width(), img.height()
scaled, w, h = fit_image(w, h, view.width() - 5, int(0.9 * view.height()))
scaled, w, h = fit_image(w, h, view.available_width() - 3, int(0.9 * view.height()))
line_height = view.blockBoundingRect(view.document().begin()).height()
return int(ceil(h / line_height)) + 1, w
# }}}