Move SheetLayout, make InputCardImage to resize

sheet_layout.py

@@ -0,0 +1,82 @@
+from typing import Tuple
+
+from base_proxy import CARD_W_INCHES, CARD_H_INCHES, LEAVE_BLEED_INCHES
+
+
+class SheetLayout:
+    def __init__(self, dpi: int, w_inches: float, h_inches: float):
+        self.dpi = dpi
+
+        self.card_w_inches = CARD_W_INCHES
+        self.card_h_inches = CARD_H_INCHES
+        self.card_w = self.in_to_px(self.card_w_inches)
+        self.card_h = self.in_to_px(self.card_h_inches)
+
+        self.w_inches = w_inches
+        self.h_inches = h_inches
+        self.w = self.in_to_px(self.w_inches)
+        self.h = self.in_to_px(self.h_inches)
+        self.leave_bleed = self.in_to_px(LEAVE_BLEED_INCHES)
+        self.cropped_image_dest_w = self.card_w + self.leave_bleed * 2
+        self.cropped_image_dest_h = self.card_h + self.leave_bleed * 2
+
+        self.spacing_inches = 0.05
+        self.spacing = self.in_to_px(self.spacing_inches)
+
+        self.min_padding_inches = 0.12
+        self.min_padding = self.in_to_px(self.min_padding_inches)
+
+        self.cards_per_row = ((self.w - self.min_padding * 2 + self.spacing)
+                              // (self.cropped_image_dest_w + self.spacing))
+        self.cards_per_column = ((self.h - self.min_padding * 2 + self.spacing)
+                                 // (self.cropped_image_dest_h + self.spacing))
+        self.cards_per_sheet = self.cards_per_row * self.cards_per_column
+
+        self.total_w_content = self.cropped_image_dest_w * self.cards_per_row + self.spacing * (self.cards_per_row - 1)
+        self.total_h_content = self.cropped_image_dest_h * self.cards_per_column + self.spacing * (self.cards_per_column - 1)
+        self.blank_space_w = (self.w - self.total_w_content) // 2
+        self.blank_space_h = (self.h - self.total_h_content) // 2
+
+        print(self.__dict__)
+
+    def in_to_px(self, inches: float) -> float:
+        return round(inches * self.dpi)
+
+    def top_of_row(self, y_index: int, with_bleed: bool) -> int:
+        assert 0 <= y_index < self.cards_per_column
+        top = self.blank_space_h + (self.cropped_image_dest_h + self.spacing) * y_index
+        if not with_bleed:
+            top += self.leave_bleed
+        return top
+
+    def bottom_of_row(self, y_index: int, with_bleed: bool) -> int:
+        if with_bleed:
+            return self.top_of_row(y_index, True) + self.cropped_image_dest_h
+        else:
+            return self.top_of_row(y_index, False) + self.card_h
+
+    def left_of_column(self, x_index: int, with_bleed: bool) -> int:
+        assert 0 <= x_index < self.cards_per_row
+        left = self.blank_space_w + (self.cropped_image_dest_w + self.spacing) * x_index
+        if not with_bleed:
+            left += self.leave_bleed
+        return left
+
+    def right_of_column(self, x_index: int, with_bleed: bool) -> int:
+        if with_bleed:
+            return self.left_of_column(x_index, True) + self.cropped_image_dest_w
+        else:
+            return self.left_of_column(x_index, False) + self.card_w
+
+    def topleft_of_card_with_bleed(self, y_index: int, x_index: int) -> Tuple[int, int]:
+        x = self.left_of_column(x_index, with_bleed=True)
+        y = self.top_of_row(y_index, with_bleed=True)
+        return (x, y)
+
+
+def letter_portrait_3x3_sheet_layout() -> SheetLayout:
+    return SheetLayout(1200, 8.5, 11)
+
+
+def letter_landscape_2x4_sheet_layout() -> SheetLayout:
+    return SheetLayout(1200, 11, 8.5)