From: Daniel Karbach <daniel.karbach@localhorst.tv>
Date: Thu, 29 Nov 2012 13:34:01 +0000 (+0100)
Subject: handle line breaks in Font::DrawString
X-Git-Url: http://git.localhorst.tv/?a=commitdiff_plain;h=9648fd7d258ae1a2baccb8dd5b6f7a9491e55803;p=l2e.git

handle line breaks in Font::DrawString

note that Font::DrawStringRight does _not_ handle line breaks as of now
---

diff --git a/src/graphics/Font.cpp b/src/graphics/Font.cpp
index 59059e0..94d451a 100644
--- a/src/graphics/Font.cpp
+++ b/src/graphics/Font.cpp
@@ -29,21 +29,32 @@ void Font::DrawChar(char c, SDL_Surface *dest, const Vector<int> &position) cons
 	sprite->Draw(dest, position, col, row);
 }
 
-void Font::DrawString(const char *s, SDL_Surface *dest, const Vector<int> &positionIn, int maxChars) const {
+void Font::DrawString(const char *s, SDL_Surface *dest, const Vector<int> &positionIn, int maxWidth) const {
 	if (!sprite) return;
 
 	Vector<int> position(positionIn);
+	Vector<int> lineHead(positionIn);
 	Vector<int> step(CharWidth(), 0);
-	for (int i(0); s[i] && (maxChars <= 0 || i < maxChars); ++i, position += step) {
-		DrawChar(s[i], dest, position);
+	Vector<int> lineBreak(0, CharHeight());
+	for (int i(0), col(0); s[i] && (maxWidth <= 0 || col < maxWidth); ++i) {
+		if (s[i] == '\n') {
+			lineHead += lineBreak;
+			position = lineHead;
+			col = 0;
+		} else {
+			DrawChar(s[i], dest, position);
+			position += step;
+			++col;
+		}
 	}
 }
 
-void Font::DrawStringRight(const char *s, SDL_Surface *dest, const Vector<int> &positionIn, int maxChars) const {
+void Font::DrawStringRight(const char *s, SDL_Surface *dest, const Vector<int> &positionIn, int maxWidth) const {
+	// NOTE: this does not handle line breaks
 	if (!sprite) return;
 
 	int length(0);
-	while (length < maxChars && s[length] != '\0') {
+	while (length < maxWidth && s[length] != '\0') {
 		++length;
 	}
 	Vector<int> position(positionIn.X() - length * CharWidth(), positionIn.Y());
diff --git a/src/graphics/Font.h b/src/graphics/Font.h
index b981946..6a8a5c2 100644
--- a/src/graphics/Font.h
+++ b/src/graphics/Font.h
@@ -30,8 +30,8 @@ public:
 	int CharWidth() const { return sprite->Width(); }
 	int CharHeight() const { return sprite->Height(); }
 	void DrawChar(char c, SDL_Surface *dest, const geometry::Vector<int> &position) const;
-	void DrawString(const char *s, SDL_Surface *dest, const geometry::Vector<int> &position, int maxChars = 0) const;
-	void DrawStringRight(const char *s, SDL_Surface *dest, const geometry::Vector<int> &position, int maxChars = 0) const;
+	void DrawString(const char *s, SDL_Surface *dest, const geometry::Vector<int> &position, int maxWidth = 0) const;
+	void DrawStringRight(const char *s, SDL_Surface *dest, const geometry::Vector<int> &position, int maxWidth = 0) const;
 	void DrawDigit(int d, SDL_Surface *dest, const geometry::Vector<int> &position) const;
 	void DrawNumber(int n, SDL_Surface *dest, const geometry::Vector<int> &position, int digits = 0) const;
 	void DrawNumberRight(int n, SDL_Surface *dest, const geometry::Vector<int> &position, int digits = 0) const;