nov algoritem za prelom vrstic in postavljanje na stran #3
This commit is contained in:
152
projector.py
152
projector.py
@@ -21,6 +21,7 @@
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import sqlite3
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import tkinter as tk
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from tkinter import font
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import json
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import os
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import math
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@@ -128,13 +129,18 @@ class SongProjector:
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self.right_frame.pack(side="right", fill="y")
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font_weight = "bold" if self.settings.get("font_bold", False) else "normal"
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self.custom_font = font.Font(
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family=self.settings["font_name"],
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size=int(self.settings["font_size"]),
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weight=font_weight
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)
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self.display_text = tk.Label(
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self.color_frame,
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text="",
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bg=self.settings["bg_color"],
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fg=self.settings["fg_color"],
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font=(self.settings["font_name"], int(self.settings["font_size"]), font_weight),
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font=self.custom_font,
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wraplength=color_width,
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justify="center"
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)
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@@ -228,37 +234,28 @@ class SongProjector:
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def split_long_line(self, line):
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"""
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Vrne seznam pod-vrstic, ki skupaj tvorijo `line`,
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pri čemer so (približno) enako dolge glede na število znakov.
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pri čemer so dolge največ `self.color_width` pikslov.
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"""
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avg_char_width = int(self.settings["font_size"]) * 0.57
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wraplength_px = self.color_width
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# Koliko znakov približno gre v eno vrstico
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approx_chars_per_line = max(1, int(wraplength_px / avg_char_width))
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if len(line) <= approx_chars_per_line:
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return [line]
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# Potrebno število pod-vrstic
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n_sub = math.ceil(len(line) / approx_chars_per_line)
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words = line.split()
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total_chars = sum(len(w) for w in words) + len(words) - 1 # vključno s presledki
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target_len = total_chars / n_sub
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if not words:
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return [""]
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sub_lines = []
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current_words = []
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current_len = 0
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for word in words:
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added_len = len(word) + (1 if current_words else 0) # presledek pred besedo, če ni prva
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if current_len + added_len > target_len and len(sub_lines) < n_sub - 1:
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# Začni novo vrstico
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sub_lines.append(" ".join(current_words))
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current_words = [word]
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current_len = len(word)
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else:
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test_line = " ".join(current_words + [word])
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# Izmerimo širino v pikslih
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if self.custom_font.measure(test_line) <= self.color_width:
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current_words.append(word)
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current_len += added_len
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else:
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if current_words:
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sub_lines.append(" ".join(current_words))
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current_words = [word]
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else:
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# Beseda je sama po sebi predolga (zelo redko)
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sub_lines.append(word)
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current_words = []
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if current_words:
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sub_lines.append(" ".join(current_words))
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@@ -330,75 +327,70 @@ class SongProjector:
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if result:
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lyrics = result[0]
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max_height = self.screen_height - (self.line_height * 1.5)
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avg_char_width = int(self.settings["font_size"]) * 0.57
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wraplength = self.color_width
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max_height = self.screen_height - (self.line_height * 2)
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# -------------------------------------------
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# 1. Razbijanje besedila na (pod-)vrstice
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# -------------------------------------------
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raw_lines = lyrics.strip().splitlines()
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processed_lines = []
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for raw in raw_lines:
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if raw.strip() == "":
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processed_lines.append("") # ohranimo prazno vrstico
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else:
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processed_lines.extend(self.split_long_line(raw))
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# 1. Razdelimo na kitice (stanzas)
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# Kitice so ločene z eno ali več praznimi vrsticami
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import re
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stanzas_raw = re.split(r'\n\s*\n', lyrics.strip())
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# -------------------------------------------
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# 2. Razdeljevanje vrstic na strani
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# -------------------------------------------
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processed_stanzas = []
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for stanza in stanzas_raw:
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lines = stanza.splitlines()
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stanza_lines = []
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for line in lines:
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if line.strip():
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stanza_lines.extend(self.split_long_line(line))
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if stanza_lines:
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processed_stanzas.append(stanza_lines)
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# 2. Razdeljevanje kitic na strani
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pages = []
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current_page_lines = []
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current_height = 0
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blank_line_count = 0
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for line in processed_lines:
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is_blank = (line.strip() == "")
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if is_blank:
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blank_line_count += 1
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else:
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blank_line_count = 0
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for stanza in processed_stanzas:
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stanza_height = len(stanza) * self.line_height
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approx_line_length = len(line)
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approx_line_count = 1 if is_blank else math.ceil((approx_line_length * avg_char_width) / wraplength)
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needed_height = self.line_height * approx_line_count
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# Prazna vrstica več kot 1-krat pomeni nova kitica ⇒ nova stran
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if blank_line_count >= 2:
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# Če kitica sama po sebi presega max_height, jo moramo razdeliti
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if stanza_height > max_height:
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# Če imamo že kaj na strani, to zaključimo
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if current_page_lines:
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pages.append("\n".join(current_page_lines).strip())
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current_page_lines = []
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current_height = 0
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blank_line_count = 0
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continue
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# Če čez spodnji rob strani …
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if current_height + needed_height > max_height + self.line_height // 2:
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# poskusimo prelomiti na prazni vrstici znotraj strani
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found_split = False
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for i in reversed(range(len(current_page_lines))):
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if current_page_lines[i].strip() == "":
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pages.append("\n".join(current_page_lines[:i]).strip())
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current_page_lines = current_page_lines[i + 1:]
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current_height = sum(
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self.line_height * (
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1 if l.strip() == "" else math.ceil(len(l) * avg_char_width / wraplength)
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)
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for l in current_page_lines
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)
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found_split = True
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break
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if not found_split:
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pages.append("\n".join(current_page_lines).strip())
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pages.append("\n".join(current_page_lines))
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current_page_lines = []
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current_height = 0
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current_page_lines.append(line)
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current_height += needed_height
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# Razdelimo predolgo kitico na več strani
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temp_stanza_lines = []
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temp_height = 0
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for line in stanza:
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if temp_height + self.line_height > max_height:
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pages.append("\n".join(temp_stanza_lines))
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temp_stanza_lines = [line]
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temp_height = self.line_height
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else:
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temp_stanza_lines.append(line)
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temp_height += self.line_height
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if temp_stanza_lines:
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current_page_lines = temp_stanza_lines
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current_height = temp_height
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# Če kitica ne gre več na trenutno stran
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elif current_height + stanza_height + (self.line_height if current_page_lines else 0) > max_height:
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pages.append("\n".join(current_page_lines))
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current_page_lines = stanza
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current_height = stanza_height
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# Kitica gre na trenutno stran
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else:
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if current_page_lines:
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current_page_lines.append("") # Razmik med kiticami
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current_height += self.line_height
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current_page_lines.extend(stanza)
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current_height += stanza_height
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if current_page_lines:
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pages.append("\n".join(current_page_lines).strip())
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pages.append("\n".join(current_page_lines))
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self.pages = pages
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self.current_page_index = 0
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