Merge lp:~widelands-dev/widelands/table_image_overlap into lp:widelands

[GunChleoc]

Fixed image overlap on the bottom of tables.

The reason for the bug was that blictrect_scale can't handle cropping as well. So, I am blitting the image into a new Texture, which can then be blitted normally with built-in cropping.

The bug is most notable while scrolling in the Mesages window.

[TiborB (tiborb95)]

Tested. I dont know how it looked before though :)

review: Approve

[kaputtnik (franku)]

Works fine :-)

review: Approve

=== modified file 'src/ui_basic/table.cc'
--- src/ui_basic/table.cc	2015-11-21 11:34:10 +0000
+++ src/ui_basic/table.cc	2015-12-29 19:42:11 +0000
@@ -24,6 +24,7 @@
 #include "graphic/font.h"
 #include "graphic/font_handler1.h"
 #include "graphic/graphic.h"
+#include "graphic/texture.h"
 #include "graphic/rendertarget.h"
 #include "graphic/text/font_set.h"
 #include "graphic/text_constants.h"
@@ -297,9 +298,12 @@
 
 				int draw_x = point.x;
 
-				if (pich > 0 && pich > lineheight) {
+				// We want a bit of margin
+				int max_pic_height = lineheight - 3;
+
+				if (pich > 0 && pich > max_pic_height) {
 					// Scale image to fit lineheight
-					double image_scale = static_cast<double>(lineheight) / pich;
+					double image_scale = static_cast<double>(max_pic_height) / pich;
 					int blit_width = image_scale * picw;
 
 					if (entry_string.empty()) {
@@ -310,16 +314,24 @@
 						}
 					}
 
-					dst.blitrect_scale(
-								// Center align if text is empty
-								Rect(draw_x,
-									  point.y,
-									  blit_width,
-									  lineheight),
-								entry_picture,
-								Rect(0, 0, picw, pich),
-								1.,
-								BlendMode::UseAlpha);
+					// Temporary texture for the scaled image
+					Texture* scaled_texture = new Texture(blit_width, max_pic_height);
+
+					// Initialize the rectangle
+					::fill_rect(Rect(0, 0, blit_width, max_pic_height), RGBAColor(255, 255, 255, 0), scaled_texture);
+
+					// Create the scaled image
+					::blit(Rect(0, 0, blit_width, max_pic_height),
+							 *entry_picture,
+							 Rect(0, 0, picw, pich),
+							 1.,
+							 BlendMode::UseAlpha,
+							 scaled_texture);
+
+					// This will now blit with any appropriate cropping
+					dst.blit(Point(draw_x, point.y + 1), scaled_texture);
+
+					// For text alignment below
 					picw = blit_width;
 				} else {
 					if (entry_string.empty()) {