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classes.py
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classes.py
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import wx
import wx.lib.scrolledpanel as scrolled
import fitz
# The main scrollable window that contains all of the widgets
class Scrolly(scrolled.ScrolledPanel):
def __init__(self, parent, doccy):
scrolled.ScrolledPanel.__init__(self, parent, -1, size=parent.GetSize())
self.SetAutoLayout(0)
self.Bind(wx.EVT_SCROLLWIN, self.onScroll)
self.zoom_factor = 1
self.gap = 10
self.layout = 1
self.hbox = wx.BoxSizer(wx.HORIZONTAL)
self.fgs = wx.FlexGridSizer(cols=1, vgap=10, hgap=10)
self.gbs = wx.GridBagSizer(self.gap, self.gap)
self.gbs.SetEmptyCellSize((-self.gap,-self.gap))
self.doccy = doccy
self.pages = []
self.drawn_pages = set()
for i,dl in enumerate(self.doccy.dls):
self.pages.append(Page(self, i+1, dl))
self.gbs.Add(self.pages[i], (i,0), flag=wx.ALIGN_CENTER_HORIZONTAL)
self.hbox.AddStretchSpacer(1)
self.hbox.Add(self.gbs)
self.hbox.AddStretchSpacer(1)
self.SetSizer(self.hbox)
self.SetupScrolling()
def onScroll(self,evt: wx.ScrollWinEvent):
self.is_onpage()
evt.Skip()
def OnChildFocus(self, evt):
pass
def set_layout(self):
if self.layout == 1:
for i,item in enumerate(self.gbs.GetChildren()):
pos = item.GetPos()
if i%2:
w,h = item.GetSize()
prev = self.gbs.GetChildren()[i-1]
prev_w,prev_h = prev.GetSize()
if w-h < 0:
if prev_w - prev_h > 0:
self.gbs.SetItemPosition(item.GetWindow(), (pos[0], pos[1]+1))
else:
self.gbs.SetItemPosition(item.GetWindow(), (pos[0]-1, pos[1]+1))
self.layout = 2
elif self.layout == 2:
for i,item in enumerate(self.gbs.GetChildren()):
pos = item.GetPos()
if i%2:
w,h = item.GetSize()
prev = self.gbs.GetChildren()[i-1]
prev_w,prev_h = prev.GetSize()
if w-h < 0:
if prev_w - prev_h > 0:
self.gbs.SetItemPosition(item.GetWindow(), (pos[0], pos[1]-1))
else:
self.gbs.SetItemPosition(item.GetWindow(), (pos[0]+1, pos[1]-1))
self.layout = 1
self.gbs.Layout()
self.SetupScrolling(scrollToTop=False)
self.is_onpage()
def zoom(self, zoom_factor=1, x=None, y=None):
self.zoom_factor = zoom_factor
scroll_size_y = self.GetScrollPageSize(wx.VERTICAL)
scroll_pos_y = self.GetScrollPos(wx.VERTICAL)
scroll_range_x = self.GetScrollRange(wx.HORIZONTAL)
scroll_range_x = self.GetScrollRange(wx.VERTICAL)
ratio = (scroll_pos_y + (scroll_size_y/2)) / scroll_range_x
for page in self.pages:
page.zoom(zoom_factor)
self.gbs.Layout()
self.SetupScrolling(scrollToTop=False)
n_scroll_size_x = self.GetScrollPageSize(wx.HORIZONTAL)
n_scroll_size_y = self.GetScrollPageSize(wx.VERTICAL)
n_scroll_range_x = self.GetScrollRange(wx.HORIZONTAL)
n_scroll_range_y = self.GetScrollRange(wx.VERTICAL)
n_view_start_x = n_scroll_range_x * ratio - n_scroll_size_x/2
n_view_start_y = n_scroll_range_y * ratio - n_scroll_size_y/2
self.Scroll(int(n_view_start_x),int(n_view_start_y))
self.drawn_pages.clear()
self.is_onpage()
# We have to use 1-indexed pages because wxPython objects can't have ID "0".
# See the `for` loop in the __init__
def rotate_page(self, page, zoom_factor=False):
idx = page-1
if zoom_factor:
self.zoom_factor = zoom_factor
else:
zoom_factor = self.zoom_factor
if self.pages[idx] is not self.pages[-1]:
next = idx+1
next_pos = self.gbs.GetItemPosition(self.pages[next])
else:
next = None
next_pos = None
if idx != 0:
prev = idx-1
else:
prev = None
pos = self.gbs.GetItemPosition(self.pages[idx])
is_portrait = self.pages[idx].img.Width - self.pages[idx].img.Height < 0
if self.layout == 1:
if is_portrait:
self.gbs.SetItemSpan(self.pages[idx], (1,2))
else:
self.gbs.SetItemSpan(self.pages[idx], (1,1))
if self.layout == 2:
if idx%2:
prev_is_portrait = self.pages[prev].img.Width - self.pages[prev].img.Height < 0
if prev_is_portrait:
if is_portrait:
self.gbs.SetItemPosition(self.pages[idx],(pos[0]+1,0))
self.gbs.SetItemSpan(self.pages[idx], (1,2))
else:
self.gbs.SetItemSpan(self.pages[idx], (1,1))
self.gbs.SetItemPosition(self.pages[idx],(pos[0]-1,1))
else:
if is_portrait:
self.gbs.SetItemSpan(self.pages[idx], (1,2))
self.gbs.SetItemPosition(self.pages[idx],(pos[0],0))
else:
self.gbs.SetItemSpan(self.pages[idx], (1,1))
self.gbs.SetItemPosition(self.pages[idx],(pos[0],1))
elif not next:
pass
else:
next_is_portrait = self.pages[next].img.Width - self.pages[next].img.Height < 0
if next_is_portrait:
if is_portrait:
self.gbs.SetItemPosition(self.pages[next],(next_pos[0]+1,1))
self.gbs.SetItemSpan(self.pages[idx], (1,2))
else:
self.gbs.SetItemSpan(self.pages[idx], (1,1))
self.gbs.SetItemPosition(self.pages[next],(next_pos[0]-1,1))
else:
if is_portrait:
self.gbs.SetItemSpan(self.pages[idx], (1,2))
else:
self.gbs.SetItemSpan(self.pages[idx], (1,1))
self.gbs.Layout()
self.SetupScrolling(scrollToTop=False)
self.Update()
def update_pages(self, idx=None):
if idx is None:
for page in self.pages:
page.OnSize()
else:
self.pages[idx].OnSize()
def print_data(self):
for item in self.pages:
print(f'item.GetId(): {item.GetId()}')
print(f'gbs size: {self.gbs.GetSize()}')
print(f'gbs position: {self.gbs.GetPosition()}')
print(f'doccy ClientSize: {self.GetClientSize()}')
print(f'doccy Size: {self.GetSize()}')
print(f'doccy ScreenRect: {self.GetScreenRect()}')
print(f'doccy ClientRect: {self.GetClientRect()}')
print(f'doccy TargetRect: {self.GetTargetRect()}')
print(f'doccy ViewStart: {self.GetViewStart()}')
print(f'doccy ScrollPageSize v: {self.GetScrollPageSize(wx.VERTICAL)}')
print(f'doccy ScrollPageSize h: {self.GetScrollPageSize(wx.HORIZONTAL)}')
print(f'doccy ScrollRange v: {self.GetScrollRange(wx.VERTICAL)}')
print(f'doccy ScrollRange h: {self.GetScrollRange(wx.HORIZONTAL)}')
print(f'doccy ScrollPixelsPerUnit: {self.GetScrollPixelsPerUnit()}')
print(f'doccy Position: {self.GetPosition()}')
print(f'doccy VirtualSize: {self.GetVirtualSize()}')
print(f'#########################\n')
def show_sizer(self):
for i,item in enumerate(self.gbs.GetChildren()):
print(f'###\nPAGE {i+1}')
print(f'item.Position(): {item.GetPosition()}')
print(f'item.Rect(): {item.GetRect()}')
print(f'item.Position(): {item.GetPosition()}')
print(f'item.Id(): {item.GetId()}')
print(f'item.Proportion(): {item.GetProportion()}')
def is_onpage(self):
pixels_h,pixels_v = self.GetSize()
for i,page in enumerate(self.pages):
x,y,w,h = page.GetRect()
if y < 0 and y+h > 0 and i not in self.drawn_pages:
self.drawn_pages.add(i)
page.draw()
elif y >= 0 and y <= pixels_v and i not in self.drawn_pages:
self.drawn_pages.add(i)
page.draw()
elif i in self.drawn_pages:
self.drawn_pages.remove(i)
# TODO
def blit(self, zoom_factor=1, x=None, y=None):
#What's here now was just copied and pasted from some other part, for reference
view_start_x, view_start_y = self.GetViewStart()
for i,dl in enumerate(self.doccy.dls):
#pic = dl.get_pixmap(matrix=fitz.Matrix(zoom_factor,zoom_factor), clip=(10,10,100,100))
pic = dl.get_pixmap(matrix=fitz.Matrix(zoom_factor,zoom_factor))
static_bmps[i].SetBitmap(wx.Bitmap(wx.Image(pic.w,pic.h,pic.samples_mv)))
# Our document
class Doccy():
def __init__(self, document, mat=6):
self.doc = fitz.Document(document)
self.mat = fitz.Matrix(mat,mat)
self.dls = []
for page in self.doc:
self.dls.append(page.get_displaylist())
# Dynamic pages
class Page(wx.Window):
def __init__(self, parent: Scrolly, id, dl: fitz.DisplayList):
wx.Window.__init__(self, parent, id, style=wx.BORDER_DOUBLE)
self.parent = parent
self.dl = dl
self.matrix = fitz.Matrix(1,1)
self.pixmap = self.dl.get_pixmap(self.matrix)
self.degrees = {0: 0.0, 1: 90.0, 2: 180.0, 3: 270.0}
self.rotation = 0
self.zoom_factor = 1
self.img = wx.Image(self.pixmap.w,self.pixmap.h,self.pixmap.samples_mv)
self.static = wx.StaticBitmap(self, id, wx.Bitmap(self.img))
self.SetSize(self.img.GetSize())
self.small_btn_size = [35,35]
self.text_btn_size = [120,35]
self.rot_l = wx.Button(self, -1, '↶', (0,0), self.small_btn_size, name='rot_l')
self.rot_l.Hide()
self.rot_r = wx.Button(self, -1, '↷', (0,0), self.small_btn_size, name='rot_r')
self.rot_r.Hide()
self.save_img = wx.Button(self, -1, '💾 Save as Image', (0,0), self.text_btn_size, name='save_img')
self.save_img.Hide()
self.Bind(wx.EVT_BUTTON, self.OnButton)
self.Bind(wx.EVT_ENTER_WINDOW, self.showButtons)
self.Bind(wx.EVT_LEAVE_WINDOW, self.showButtons)
def draw(self):
self.matrix = fitz.Matrix(self.zoom_factor, self.zoom_factor)
self.matrix.prerotate(self.degrees[self.rotation%4])
self.pixmap = self.dl.get_pixmap(self.matrix)
pic = wx.Image(self.pixmap.w, self.pixmap.h, self.pixmap.samples_mv)
self.static.SetBitmap(wx.Bitmap(pic))
self.OnSize()
def zoom(self, zoom_factor):
self.zoom_factor = zoom_factor
x,y = self.img.GetSize()
#pic = self.img.Size(self.img.GetSize()*zoom_factor, (0,0))
pic = self.img.Scale(int(x * zoom_factor), int(y * zoom_factor), wx.IMAGE_QUALITY_NEAREST)
self.static.SetBitmap(wx.Bitmap(pic))
self.parent.drawn_pages.clear()
self.parent.is_onpage()
self.OnSize()
def OnSize(self):
size = self.static.GetSize()
self.rot_l.SetPosition((0, size[1]-self.small_btn_size[1]))
self.rot_r.SetPosition((size[0]-self.small_btn_size[0], size[1]-self.small_btn_size[1]))
self.save_img.SetPosition((size[0]//2 - self.text_btn_size[0]//2, 0))
self.Update()
def showButtons(self, event):
if event.GetEventType() == wx.wxEVT_ENTER_WINDOW:
self.rot_l.Show()
self.rot_r.Show()
self.save_img.Show()
elif event.GetEventType() == wx.wxEVT_LEAVE_WINDOW:
pos = event.GetPosition()
rect_l = self.rot_l.GetRect()
rect_r = self.rot_r.GetRect()
rect_save = self.save_img.GetRect()
good = True
if rect_r.Contains(pos):
good = False
elif rect_l.Contains(pos):
good = False
elif rect_save.Contains(pos):
good = False
if good:
self.rot_l.Hide()
self.rot_r.Hide()
self.save_img.Hide()
self.parent.SetFocus()
# If I make many more buttons than this, I will break them out into their own functions.
def OnButton(self, event):
if event.GetEventObject().Name == 'rot_r':
self.rotate(clockwise=True)
elif event.GetEventObject().Name == 'rot_l':
self.rotate(clockwise=False)
elif event.GetEventObject().Name == 'save_img':
save_dialog = wx.FileDialog(
self,
"Save Image",
wildcard="PNG files (*.png)|*.png",
style=wx.FD_SAVE | wx.FD_OVERWRITE_PROMPT,
defaultFile="page_" + str(self.GetId()) +".png")
if save_dialog.ShowModal() == wx.ID_CANCEL:
return
path = save_dialog.GetPath()
bmp = self.static.GetBitmap()
bmp.SaveFile(path, wx.BITMAP_TYPE_PNG)
def rotate(self, clockwise=True):
self.parent.rotate_page(self.GetId())
if clockwise:
self.rotation += 1
else:
self.rotation -= 1
self.img = self.img.Rotate90(clockwise)
self.static.SetBitmap(wx.Bitmap(self.img))
self.zoom(self.zoom_factor)
self.OnSize()