From 21bf0c30d69a37eff18f3c66c379e13a010f30db Mon Sep 17 00:00:00 2001 From: Johannes 'josch' Schauer Date: Wed, 3 Jul 2019 15:24:04 +0200 Subject: [PATCH] add PageSizeWidget --- plakativ.py | 285 +++++++++++++++++++++++++++++++++++----------------- 1 file changed, 191 insertions(+), 94 deletions(-) diff --git a/plakativ.py b/plakativ.py index a670151..e24e767 100644 --- a/plakativ.py +++ b/plakativ.py @@ -80,12 +80,18 @@ class Plakativ: return pix.getImageData("ppm") def compute_layout( - self, mode, size=None, mult=None, npages=None, border=(0, 0, 0, 0) + self, + mode, + postersize=None, + mult=None, + npages=None, + pagesize=(210, 297), + border=(0, 0, 0, 0), ): border_top, border_right, border_bottom, border_left = border self.layout = { - "output_pagesize": PAGE_SIZES["A4 (21.0 cm × 29.7 cm)"], + "output_pagesize": pagesize, "border_top": border_top, "border_right": border_right, "border_bottom": border_bottom, @@ -104,10 +110,10 @@ class Plakativ: if mode in ["size", "mult"]: if mode == "size": # fit the input page size into the selected postersize - poster_width = size[0] + poster_width = postersize[0] poster_height = (poster_width * inpage_height) / inpage_width - if poster_height > size[1]: - poster_height = size[1] + if poster_height > postersize[1]: + poster_height = postersize[1] poster_width = (poster_height * inpage_width) / inpage_height elif mode == "mult": area = inpage_width * inpage_height * mult @@ -221,15 +227,15 @@ class Plakativ: mult = (poster_width * poster_height) / (inpage_width * inpage_height) npages = pages_x * pages_y elif mode == "mult": - size = poster_width, poster_height + postersize = poster_width, poster_height npages = pages_x * pages_y elif mode == "npages": - size = poster_width, poster_height + postersize = poster_width, poster_height mult = (poster_width * poster_height) / (inpage_width * inpage_height) else: raise Exception("unsupported mode: %s" % mode) - return size, mult, npages + return postersize, mult, npages def render(self, outfile): if not hasattr(self, "layout"): @@ -453,72 +459,17 @@ class Application(tkinter.Frame): ) input_range_entry.grid(row=3, column=1, sticky=tkinter.W) - pagesize_group = tkinter.LabelFrame( - frame1.interior, text="Size of output pages" - ) - pagesize_group.pack(fill=tkinter.X) - - pagesize_fixed = tkinter.StringVar() - if not hasattr(self, "plakativ"): - pagesize_fixed.set("") - else: - pagesize_fixed.set( - dict(zip(PAGE_SIZES.values(), PAGE_SIZES.keys()))[ - self.plakativ.pagesize - ] - ) - pagesize_options = OptionMenu( - pagesize_group, - pagesize_fixed, - *PAGE_SIZES.keys(), - command=self.on_select_pagesize, - state=tkinter.DISABLED if not hasattr(self, "plakativ") else tkinter.NORMAL - ) - pagesize_options.grid(row=1, column=0, columnspan=3, sticky=tkinter.W) - - label_pagesize_width = tkinter.Label( - pagesize_group, text="Width:", state=tkinter.DISABLED - ) - label_pagesize_width.grid(row=2, column=0, sticky=tkinter.W) - pagesize_width = tkinter.Spinbox( - pagesize_group, - format="%.2f", - increment=0.01, - from_=0, - to=100, - width=5, - state=tkinter.DISABLED, - ) - pagesize_width.grid(row=2, column=1, sticky=tkinter.W) - label_pagesize_width_mm = tkinter.Label( - pagesize_group, text="mm", state=tkinter.DISABLED - ) - label_pagesize_width_mm.grid(row=2, column=2, sticky=tkinter.W) - - label_pagesize_height = tkinter.Label( - pagesize_group, text="Height:", state=tkinter.DISABLED - ) - label_pagesize_height.grid(row=3, column=0, sticky=tkinter.W) - pagesize_height = tkinter.Spinbox( - pagesize_group, - format="%.2f", - increment=0.01, - from_=0, - to=100, - width=5, - state=tkinter.DISABLED, - ) - pagesize_height.grid(row=3, column=1, sticky=tkinter.W) - label_pagesize_height_mm = tkinter.Label( - pagesize_group, text="mm", state=tkinter.DISABLED - ) - label_pagesize_height_mm.grid(row=3, column=2, sticky=tkinter.W) - - self.border = BorderWidget(frame1.interior) - self.border.pack(fill=tkinter.X) - self.border.set(20.0, 20.0, 20.0, 20.0) + self.pagesize = PageSizeWidget(frame1.interior) + self.pagesize.pack(fill=tkinter.X) + self.pagesize.set(False, (210, 297)) if hasattr(self, "plakativ"): - self.postersize.callback = self.on_border + self.postersize.callback = self.on_pagesize + + self.bordersize = BorderSizeWidget(frame1.interior) + self.bordersize.pack(fill=tkinter.X) + self.bordersize.set(20.0, 20.0, 20.0, 20.0) + if hasattr(self, "plakativ"): + self.postersize.callback = self.on_bordersize self.postersize = PostersizeWidget(frame1.interior) self.postersize.pack(fill=tkinter.X) @@ -578,28 +529,35 @@ class Application(tkinter.Frame): ) quit_button.pack(side=tkinter.RIGHT, expand=tkinter.TRUE, fill=tkinter.X) - def on_postersize(self, value): - mode, (custom_size, size), mult, npages = value - border = self.border.value - size, mult, npages = self.plakativ.compute_layout( - mode, size, mult, npages, border - ) - self.draw() - return (mode, (custom_size, size), mult, npages) - - def on_border(self, value): + def on_pagesize(self, value): + _, pagesize = value mode, (custom_size, size), mult, npages = self.postersize.value + bordersize = self.bordersize.value size, mult, npages = self.plakativ.compute_layout( - mode, size, mult, npages, value + mode, size, mult, npages, pagesize, bordersize ) self.postersize.set(mode, (custom_size, size), mult, npages) self.draw() - def on_select_pagesize(self, value): - self.posterizer.pagesize = PAGE_SIZES[value] - self.posterizer.compute_layout() + def on_bordersize(self, value): + _, pagesize = self.pagesize.value + mode, (custom_size, size), mult, npages = self.postersize.value + size, mult, npages = self.plakativ.compute_layout( + mode, size, mult, npages, pagesize, value + ) + self.postersize.set(mode, (custom_size, size), mult, npages) self.draw() + def on_postersize(self, value): + mode, (custom_size, size), mult, npages = value + _, pagesize = self.pagesize.value + border = self.bordersize.value + size, mult, npages = self.plakativ.compute_layout( + mode, size, mult, npages, pagesize, border + ) + self.draw() + return (mode, (custom_size, size), mult, npages) + def on_resize(self, event): self.canvas_size = (event.width, event.height) self.draw() @@ -609,6 +567,12 @@ class Application(tkinter.Frame): self.canvas.delete(tkinter.ALL) if not hasattr(self, "plakativ"): + self.canvas.create_text( + self.canvas_size[0] / 2, + self.canvas_size[1] / 2, + text="Click on the \"Open PDF\" button in the upper right.", + fill="white", + ) return canvas_padding = 10 @@ -708,9 +672,10 @@ class Application(tkinter.Frame): self.plakativ = Plakativ(self.filename) # compute the splitting with the current values mode, (custom_size, size), mult, npages = self.postersize.value - border = self.border.value + _, pagesize = self.pagesize.value + border = self.bordersize.value size, mult, npages = self.plakativ.compute_layout( - mode, size, mult, npages, border + mode, size, mult, npages, pagesize, border ) # update postersize widget self.postersize.set(mode, (custom_size, size), mult, npages) @@ -719,8 +684,9 @@ class Application(tkinter.Frame): # enable save button self.save_button.configure(state=tkinter.NORMAL) # set callback function + self.pagesize.callback = self.on_pagesize + self.bordersize.callback = self.on_bordersize self.postersize.callback = self.on_postersize - self.border.callback = self.on_border def on_save_button(self): base, ext = os.path.splitext(os.path.basename(self.filename)) @@ -737,7 +703,131 @@ class Application(tkinter.Frame): self.plakativ.render(filename) -class BorderWidget(tkinter.LabelFrame): +class PageSizeWidget(tkinter.LabelFrame): + def __init__(self, parent, *args, **kw): + tkinter.LabelFrame.__init__( + self, parent, text="Size of output pages", *args, **kw + ) + + self.callback = None + + self.variables = { + "dropdown": tkinter.StringVar(), + "width": tkinter.DoubleVar(), + "height": tkinter.DoubleVar(), + } + + for k, v in self.variables.items(): + # need to pass k and v as function arguments so that their value + # does not get overwritten each loop iteration + def callback(varname, idx, op, k_copy=k, v_copy=v): + assert op == "w" + getattr(self, "on_" + k_copy)(v_copy.get()) + + v.trace("w", callback) + + OptionMenu(self, self.variables["dropdown"], *PAGE_SIZES.keys()).grid( + row=1, column=0, columnspan=3, sticky=tkinter.W + ) + + tkinter.Label( + self, text="Width:", state=tkinter.DISABLED, name="size_label_width" + ).grid(row=2, column=0, sticky=tkinter.W) + tkinter.Spinbox( + self, + format="%.2f", + increment=0.01, + from_=0, + to=100, + width=5, + state=tkinter.DISABLED, + name="spinbox_width", + textvariable=self.variables["width"], + ).grid(row=2, column=1, sticky=tkinter.W) + tkinter.Label( + self, text="mm", state=tkinter.DISABLED, name="size_label_width_mm" + ).grid(row=2, column=2, sticky=tkinter.W) + + tkinter.Label( + self, text="Height:", state=tkinter.DISABLED, name="size_label_height" + ).grid(row=3, column=0, sticky=tkinter.W) + tkinter.Spinbox( + self, + format="%.2f", + increment=0.01, + from_=0, + to=100, + width=5, + state=tkinter.DISABLED, + name="spinbox_height", + textvariable=self.variables["height"], + ).grid(row=3, column=1, sticky=tkinter.W) + tkinter.Label( + self, text="mm", state=tkinter.DISABLED, name="size_label_height_mm" + ).grid(row=3, column=2, sticky=tkinter.W) + + def on_dropdown(self, value): + custom_size, size = self.value + if value == "custom": + custom_size = True + else: + custom_size = False + size = PAGE_SIZES[value] + self.set(custom_size, size) + + def on_width(self, value): + if getattr(self, "value", None) is None: + return + custom_size, (_, height) = self.value + self.set(custom_size, (value, height)) + + def on_height(self, value): + if getattr(self, "value", None) is None: + return + custom_size, (width, _) = self.value + self.set(custom_size, (width, value)) + + def set(self, custom_size, pagesize): + # before setting self.value, check if the effective value is different + # from before or otherwise we do not need to execute the callback in + # the end + state_changed = True + if getattr(self, "value", None) is not None: + state_changed = self.value != (custom_size, pagesize) + # execute callback if necessary + if state_changed and self.callback is not None: + self.callback((custom_size, pagesize)) + self.value = (custom_size, pagesize) + width, height = pagesize + if custom_size: + self.nametowidget("size_label_width").configure(state=tkinter.NORMAL) + self.nametowidget("spinbox_width").configure(state=tkinter.NORMAL) + self.nametowidget("size_label_width_mm").configure(state=tkinter.NORMAL) + self.nametowidget("size_label_height").configure(state=tkinter.NORMAL) + self.nametowidget("spinbox_height").configure(state=tkinter.NORMAL) + self.nametowidget("size_label_height_mm").configure(state=tkinter.NORMAL) + else: + self.nametowidget("size_label_width").configure(state=tkinter.DISABLED) + self.nametowidget("spinbox_width").configure(state=tkinter.DISABLED) + self.nametowidget("size_label_width_mm").configure(state=tkinter.DISABLED) + self.nametowidget("size_label_height").configure(state=tkinter.DISABLED) + self.nametowidget("spinbox_height").configure(state=tkinter.DISABLED) + self.nametowidget("size_label_height_mm").configure(state=tkinter.DISABLED) + # only set variables that changed to not trigger multiple variable tracers + if custom_size: + if self.variables["dropdown"].get() != "custom": + self.variables["dropdown"].set("custom") + else: + val = dict(zip(PAGE_SIZES.values(), PAGE_SIZES.keys()))[(width, height)] + if self.variables["dropdown"].get() != val: + self.variables["dropdown"].set(val) + if self.variables["width"].get() != width: + self.variables["width"].set(width) + if self.variables["height"].get() != height: + self.variables["height"].set(height) + + +class BorderSizeWidget(tkinter.LabelFrame): def __init__(self, parent, *args, **kw): tkinter.LabelFrame.__init__( self, parent, text="Output Borders/Overlap", *args, **kw @@ -859,7 +949,7 @@ class PostersizeWidget(tkinter.LabelFrame): self.variables["dropdown"], *PAGE_SIZES.keys(), # state=tkinter.DISABLED, - name="size_dropdown" + name="size_dropdown", ).grid(row=1, column=0, columnspan=3, sticky=tkinter.W, padx=(27, 0)) tkinter.Label( @@ -1042,10 +1132,17 @@ class PostersizeWidget(tkinter.LabelFrame): def compute_layout( - infile, outfile, mode, size=None, mult=None, npages=None, border=(0, 0, 0, 0) + infile, + outfile, + mode, + size=None, + mult=None, + npages=None, + pagesize=(210, 297), + border=(0, 0, 0, 0), ): plakativ = Plakativ(infile) - plakativ.compute_layout(mode, size, mult, npages, border) + plakativ.compute_layout(mode, size, mult, npages, pagesize, border) plakativ.render(outfile)