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authorrubidium <rubidium@openttd.org>2013-06-25 20:44:23 +0000
committerrubidium <rubidium@openttd.org>2013-06-25 20:44:23 +0000
commit8bbbb1b37ad620e99bca8af43d8c7144187f574b (patch)
treed0cc52981a3e9ce8076dca058adfde55c1f61457 /src
parent48c1e4f87ee264dd66b665e4ae3a3f299ae2f85b (diff)
downloadopenttd-8bbbb1b37ad620e99bca8af43d8c7144187f574b.tar.xz
(svn r25471) -Fix/Feature [FS#5481]: support for Brahmic scripts (e.g. Tamil and Thai)
Diffstat (limited to 'src')
-rw-r--r--src/gfx.cpp130
1 files changed, 66 insertions, 64 deletions
diff --git a/src/gfx.cpp b/src/gfx.cpp
index a6b55953a..a7406b9b5 100644
--- a/src/gfx.cpp
+++ b/src/gfx.cpp
@@ -751,10 +751,10 @@ static int DrawString(int left, int right, int top, char *str, const char *last,
*/
int DrawString(int left, int right, int top, const char *str, TextColour colour, StringAlignment align, bool underline, FontSize fontsize)
{
- char buffer[DRAW_STRING_BUFFER];
- strecpy(buffer, str, lastof(buffer));
- DrawStringParams params(colour, fontsize);
- return DrawString(left, right, top, buffer, lastof(buffer), params, align, underline);
+ Layouter layout(str, right - left + 1, colour, fontsize);
+ if (layout.Length() == 0) return 0;
+
+ return DrawLayoutLine(*layout.Begin(), top, left, right, align, underline);
}
/**
@@ -775,8 +775,7 @@ int DrawString(int left, int right, int top, StringID str, TextColour colour, St
{
char buffer[DRAW_STRING_BUFFER];
GetString(buffer, str, lastof(buffer));
- DrawStringParams params(colour, fontsize);
- return DrawString(left, right, top, buffer, lastof(buffer), params, align, underline);
+ return DrawString(left, right, top, buffer, colour, align, underline, fontsize);
}
/**
@@ -920,15 +919,23 @@ static int GetMultilineStringHeight(const char *src, int num, FontSize start_fon
* @param maxw maximum string width
* @return height of pixels of string when it is drawn
*/
+static int GetStringHeight(const char *str, int maxw)
+{
+ Layouter layout(str, maxw);
+ return layout.GetBounds().height;
+}
+
+/**
+ * Calculates height of string (in pixels). The string is changed to a multiline string if needed.
+ * @param str string to check
+ * @param maxw maximum string width
+ * @return height of pixels of string when it is drawn
+ */
int GetStringHeight(StringID str, int maxw)
{
char buffer[DRAW_STRING_BUFFER];
-
GetString(buffer, str, lastof(buffer));
-
- uint32 tmp = FormatStringLinebreaks(buffer, lastof(buffer), maxw);
-
- return GetMultilineStringHeight(buffer, GB(tmp, 0, 16), FS_NORMAL);
+ return GetStringHeight(buffer, maxw);
}
/**
@@ -940,12 +947,10 @@ int GetStringHeight(StringID str, int maxw)
int GetStringLineCount(StringID str, int maxw)
{
char buffer[DRAW_STRING_BUFFER];
-
GetString(buffer, str, lastof(buffer));
- uint32 tmp = FormatStringLinebreaks(buffer, lastof(buffer), maxw);
-
- return 1 + GB(tmp, 0, 16);
+ Layouter layout(buffer, maxw);
+ return layout.Length();
}
/**
@@ -960,24 +965,6 @@ Dimension GetStringMultiLineBoundingBox(StringID str, const Dimension &suggestio
return box;
}
-
-/**
- * Calculates height of string (in pixels). The string is changed to a multiline string if needed.
- * @param str string to check
- * @param maxw maximum string width
- * @return height of pixels of string when it is drawn
- */
-int GetStringHeight(const char *str, int maxw)
-{
- char buffer[DRAW_STRING_BUFFER];
-
- strecpy(buffer, str, lastof(buffer));
-
- uint32 tmp = FormatStringLinebreaks(buffer, lastof(buffer), maxw);
-
- return GetMultilineStringHeight(buffer, GB(tmp, 0, 16), FS_NORMAL);
-}
-
/**
* Calculate string bounding box for multi-line strings.
* @param str String to check.
@@ -1104,9 +1091,49 @@ static int DrawStringMultiLine(int left, int right, int top, int bottom, char *s
*/
int DrawStringMultiLine(int left, int right, int top, int bottom, const char *str, TextColour colour, StringAlignment align, bool underline, FontSize fontsize)
{
- char buffer[DRAW_STRING_BUFFER];
- strecpy(buffer, str, lastof(buffer));
- return DrawStringMultiLine(left, right, top, bottom, buffer, lastof(buffer), colour, align, underline, fontsize);
+ int maxw = right - left + 1;
+ int maxh = bottom - top + 1;
+
+ /* It makes no sense to even try if it can't be drawn anyway, or
+ * do we really want to support fonts of 0 or less pixels high? */
+ if (maxh <= 0) return top;
+
+ Layouter layout(str, maxw, colour, fontsize);
+ int total_height = layout.GetBounds().height;
+ int y;
+ switch (align & SA_VERT_MASK) {
+ case SA_TOP:
+ y = top;
+ break;
+
+ case SA_VERT_CENTER:
+ y = RoundDivSU(bottom + top - total_height, 2);
+ break;
+
+ case SA_BOTTOM:
+ y = bottom - total_height;
+ break;
+
+ default: NOT_REACHED();
+ }
+
+ int last_line = top;
+ int first_line = bottom;
+
+ for (ParagraphLayout::Line **iter = layout.Begin(); iter != layout.End(); iter++) {
+ ParagraphLayout::Line *line = *iter;
+
+ int line_height = line->getLeading();
+ if (y >= top && y < bottom) {
+ last_line = y + line_height;
+ if (first_line > y) first_line = y;
+
+ DrawLayoutLine(line, y, left, right, align, underline);
+ }
+ y += line_height;
+ }
+
+ return ((align & SA_VERT_MASK) == SA_BOTTOM) ? first_line : last_line;
}
/**
@@ -1128,7 +1155,7 @@ int DrawStringMultiLine(int left, int right, int top, int bottom, StringID str,
{
char buffer[DRAW_STRING_BUFFER];
GetString(buffer, str, lastof(buffer));
- return DrawStringMultiLine(left, right, top, bottom, buffer, lastof(buffer), colour, align, underline, fontsize);
+ return DrawStringMultiLine(left, right, top, bottom, buffer, colour, align, underline, fontsize);
}
/**
@@ -1143,33 +1170,8 @@ int DrawStringMultiLine(int left, int right, int top, int bottom, StringID str,
*/
Dimension GetStringBoundingBox(const char *str, FontSize start_fontsize)
{
- FontSize size = start_fontsize;
- Dimension br;
- uint max_width;
- WChar c;
-
- br.width = br.height = max_width = 0;
- for (;;) {
- c = Utf8Consume(&str);
- if (c == 0) break;
- if (IsPrintable(c) && !IsTextDirectionChar(c)) {
- br.width += GetCharacterWidth(size, c);
- } else {
- switch (c) {
- case SCC_TINYFONT: size = FS_SMALL; break;
- case SCC_BIGFONT: size = FS_LARGE; break;
- case '\n':
- br.height += GetCharacterHeight(size);
- if (br.width > max_width) max_width = br.width;
- br.width = 0;
- break;
- }
- }
- }
- br.height += GetCharacterHeight(size);
-
- br.width = max(br.width, max_width);
- return br;
+ Layouter layout(str, INT32_MAX, TC_FROMSTRING, start_fontsize);
+ return layout.GetBounds();
}
/**