Only apply text-indent to lineboxes

Fix #1000.

weasyprint/layout/preferred.py

@@ -243,12 +243,16 @@ def table_cell_max_content_width(context, box, outer):
 
 def inline_line_widths(context, box, outer, is_line_start, minimum,
                        skip_stack=None, first_line=False):
-    if box.style['text_indent'].unit == '%':
-        # TODO: this is wrong, text-indent percentages should be resolved
-        # before calling this function.
-        text_indent = 0
+    if isinstance(box, boxes.LineBox):
+        if box.style['text_indent'].unit == '%':
+            # TODO: this is wrong, text-indent percentages should be resolved
+            # before calling this function.
+            text_indent = 0
+        else:
+            text_indent = box.style['text_indent'].value
     else:
-        text_indent = box.style['text_indent'].value
+        text_indent = 0
+
     current_line = 0
     if skip_stack is None:
         skip = 0

weasyprint/tests/test_text.py

@@ -448,6 +448,23 @@ def test_text_indent(indent):
     assert text_3.position_x == 10  # No indent
 
 
+@assert_no_logs
+def test_text_indent_inline():
+    # Test regression: https://github.com/Kozea/WeasyPrint/issues/1000
+    page, = render_pages('''
+        <style>
+            @font-face { src: url(AHEM____.TTF); font-family: ahem }
+            p { display: inline-block; text-indent: 1em; font-family: ahem }
+        </style>
+        <p><span>text
+    ''')
+    html, = page.children
+    body, = html.children
+    paragraph, = body.children
+    line, = paragraph.children
+    assert line.width == (4 + 1) * 16
+
+
 @pytest.mark.parametrize('indent', ('12px', '6%'))
 @assert_no_logs
 def test_text_indent_multipage(indent):