page 設定と基本的な使用方法について¶
page設定について¶
Note
"reportlabのデフォルトの単位系はポイント（point）である．1ポイントは約1/72インチ（約0.3527ミリメートル）に相当する．ポイントは、印刷業界で一般的に使用される単位．ミリメートルなどで使用するには変換が必要となる．"
基本サンプルコード¶
基本サンプルコードは下記．
repotlabの基本サンプルコード ( page設定と図形描画 )¶
import math
import reportlab
from reportlab.lib import units
from reportlab.lib.pagesizes import A4
from reportlab.pdfgen import canvas
# ------------------------------------------------- #
# --- [1] ページ設定 --- #
# ------------------------------------------------- #
pt_width, pt_height = A4
orig_size = ( pt_width, pt_height )
pt2inch, inch2mm = 1.0 / 72.0, 25.4
linewidth = 1.e-3
pt2mm = pt2inch * inch2mm
mm_width = pt_width * pt2mm
mm_height = pt_height * pt2mm
# ------------------------------------------------- #
# --- [2] pdf ( 描画エリア: canvas ) の生成 --- #
# ------------------------------------------------- #
outFile = "pdf/example.pdf"
page_size = ( mm_width, mm_height )
c = canvas.Canvas( outFile, pagesize=page_size )
c.setLineWidth( linewidth )
print( "\n" + " --- reportlab --- " + "\n" )
print( " page_size (pt) :: ( {0[0]:.3f}, {0[1]:.3f} )".format( orig_size ) )
print( " page_size (mm) :: ( {0[0]:.3f}, {0[1]:.3f} )".format( page_size ) )
print()
# ------------------------------------------------- #
# --- [3] 中心位置の取得 --- #
# ------------------------------------------------- #
center_x = mm_width / 2
center_y = mm_height / 2
# ------------------------------------------------- #
# --- [4] 矩形の描画 (枠) --- #
# ------------------------------------------------- #
margin = 10.0
wRect = mm_width - 2.0*margin
hRect = mm_height - 2.0*margin
xRect = center_x - 0.5*wRect
yRect = center_y - 0.5*hRect
c.rect( xRect, yRect, wRect, hRect )
# ------------------------------------------------- #
# --- [5] 円弧 - 形状の描画 --- #
# ------------------------------------------------- #
radius1 = 50.0
radius2 = 150.0
angle1 = 0.0
angle2 = 45.0
c.arc( center_x-radius1, center_y-radius1, center_x+radius1, center_y+radius1, angle1, angle2 )
c.arc( center_x-radius2, center_y-radius2, center_x+radius2, center_y+radius2, angle1, angle2 )
# ------------------------------------------------- #
# --- [6] 円 - 形状の描画 --- #
# ------------------------------------------------- #
radius3 = 8.0 * 0.5
c.circle( center_x, center_y, radius3 )
# ページを保存
c.showPage()
c.save()
