(svn r16799) -Codechange: When drawing articulated road vehicles in the vehicle details window, draw as many parts as the window fits instead of always up to a vehicle length of 80/8.

5 files changed, 40 insertions, 17 deletions

diff --git a/src/depot_gui.cpp b/src/depot_gui.cpp
index 354ac8057..6bd364deb 100644
--- a/src/depot_gui.cpp
+++ b/src/depot_gui.cpp
@@ -276,7 +276,7 @@ struct DepotWindow : Window {
 				DrawString(this->widget[DEPOT_WIDGET_MATRIX].left, this->widget[DEPOT_WIDGET_MATRIX].right - 1, y + 4, STR_TINY_BLACK, TC_FROMSTRING, SA_RIGHT); // Draw the counter
 				break;
 
-			case VEH_ROAD:     DrawRoadVehImage( v, x + 24, sprite_y, this->sel, 1); break;
+			case VEH_ROAD:     DrawRoadVehImage( v, x + 24, sprite_y, this->sel, 28); break;
 			case VEH_SHIP:     DrawShipImage(    v, x + 19, sprite_y - 1, this->sel); break;
 			case VEH_AIRCRAFT: {
 				const Sprite *spr = GetSprite(v->GetImage(DIR_W), ST_NORMAL);
diff --git a/src/roadveh_gui.cpp b/src/roadveh_gui.cpp
index 11e8f3eca..d09792e2f 100644
--- a/src/roadveh_gui.cpp
+++ b/src/roadveh_gui.cpp
@@ -120,12 +120,17 @@ static inline int RoadVehLengthToPixels(int length)
 	return (length * 28) / 8;
 }
 
-void DrawRoadVehImage(const Vehicle *v, int x, int y, VehicleID selection, int count)
+/**
+ * Draws an image of a road vehicle chain
+ * @param v Front vehicle
+ + @param x x Position to start at
+ * @param y y Position to draw at
+ * @param seletion Selected vehicle to draw a border around
+ * @param max_width Number of pixels space for drawing
+ */
+void DrawRoadVehImage(const Vehicle *v, int x, int y, VehicleID selection, int max_width)
 {
-	/* Road vehicle lengths are measured in eighths of the standard length, so
-	 * count is the number of standard vehicles that should be drawn. If it is
-	 * 0, we draw enough vehicles for 10 standard vehicle lengths. */
-	int max_length = (count == 0) ? 80 : count * 8;
+	int max_length = max_width / 28;
 
 	/* Width of highlight box */
 	int highlight_w = 0;
diff --git a/src/train_gui.cpp b/src/train_gui.cpp
index fb4230fb7..9591da258 100644
--- a/src/train_gui.cpp
+++ b/src/train_gui.cpp
@@ -64,7 +64,16 @@ int WagonLengthToPixels(int len)
 	return (len * _traininfo_vehicle_width) / 8;
 }
 
-void DrawTrainImage(const Vehicle *v, int x, int y, VehicleID selection, int count, int skip)
+/**
+ * Draws an image of a whole train
+ * @param v Front vehicle
+ + @param x x Position to start at
+ * @param y y Position to draw at
+ * @param seletion Selected vehicle to draw a frame around
+ * @param max_width Number of pixels space for drawing
+ * @param skip Number of pixels to skip at the front (for scrolling)
+ */
+void DrawTrainImage(const Vehicle *v, int x, int y, VehicleID selection, int max_width, int skip)
 {
 	DrawPixelInfo tmp_dpi, *old_dpi;
 	int dx = -(skip * 8) / _traininfo_vehicle_width;
@@ -72,9 +81,9 @@ void DrawTrainImage(const Vehicle *v, int x, int y, VehicleID selection, int cou
 	int highlight_l = 0;
 	int highlight_r = 0;
 
-	if (!FillDrawPixelInfo(&tmp_dpi, x - 2, y - 1, count + 1, 14)) return;
+	if (!FillDrawPixelInfo(&tmp_dpi, x - 2, y - 1, max_width + 1, 14)) return;
 
-	count = (count * 8) / _traininfo_vehicle_width;
+	int count = (max_width * 8) / _traininfo_vehicle_width;
 
 	old_dpi = _cur_dpi;
 	_cur_dpi = &tmp_dpi;
diff --git a/src/vehicle_gui.cpp b/src/vehicle_gui.cpp
index 17b225b38..7f55f3b24 100644
--- a/src/vehicle_gui.cpp
+++ b/src/vehicle_gui.cpp
@@ -798,13 +798,22 @@ static void DrawSmallOrderList(const Vehicle *v, int left, int right, int y)
 	}
 }
 
-static void DrawVehicleImage(const Vehicle *v, int x, int y, VehicleID selection, int count, int skip)
+/**
+ * Draws an image of a vehicle chain
+ * @param v Front vehicle
+ + @param x x Position to start at
+ * @param y y Position to draw at
+ * @param seletion Selected vehicle to draw a frame around
+ * @param max_width Number of pixels space for drawing
+ * @param skip Number of pixels to skip at the front (for scrolling)
+ */
+static void DrawVehicleImage(const Vehicle *v, int x, int y, VehicleID selection, int max_width, int skip)
 {
 	switch (v->type) {
-		case VEH_TRAIN:    DrawTrainImage(v, x, y, selection, count, skip); break;
-		case VEH_ROAD:     DrawRoadVehImage(v, x, y, selection, count);     break;
-		case VEH_SHIP:     DrawShipImage(v, x, y, selection);               break;
-		case VEH_AIRCRAFT: DrawAircraftImage(v, x, y, selection);           break;
+		case VEH_TRAIN:    DrawTrainImage(v, x, y, selection, max_width, skip); break;
+		case VEH_ROAD:     DrawRoadVehImage(v, x, y, selection, max_width);     break;
+		case VEH_SHIP:     DrawShipImage(v, x, y, selection);                   break;
+		case VEH_AIRCRAFT: DrawAircraftImage(v, x, y, selection);               break;
 		default: NOT_REACHED();
 	}
 }
@@ -1517,7 +1526,7 @@ struct VehicleDetailsWindow : Window {
 			case VEH_ROAD:
 			case VEH_SHIP:
 			case VEH_AIRCRAFT:
-				DrawVehicleImage(v, matrix->left + 3, matrix->top + 1, INVALID_VEHICLE, 0, 0);
+				DrawVehicleImage(v, matrix->left + 3, matrix->top + 1, INVALID_VEHICLE, matrix->right - matrix->left - 5, 0);
 				DrawVehicleDetails(v, matrix->left + 75, matrix->right - 2, matrix->top + 1, this->vscroll.pos, this->vscroll.cap, det_tab);
 				break;
 
diff --git a/src/vehicle_gui.h b/src/vehicle_gui.h
index fb3516ec4..3371bd16c 100644
--- a/src/vehicle_gui.h
+++ b/src/vehicle_gui.h
@@ -61,8 +61,8 @@ static inline bool ValidVLWFlags(uint16 flags)
 
 int DrawVehiclePurchaseInfo(int left, int right, int y, EngineID engine_number);
 
-void DrawTrainImage(const Vehicle *v, int x, int y, VehicleID selection, int count, int skip);
-void DrawRoadVehImage(const Vehicle *v, int x, int y, VehicleID selection, int count);
+void DrawTrainImage(const Vehicle *v, int x, int y, VehicleID selection, int max_width, int skip);
+void DrawRoadVehImage(const Vehicle *v, int x, int y, VehicleID selection, int max_width);
 void DrawShipImage(const Vehicle *v, int x, int y, VehicleID selection);
 void DrawAircraftImage(const Vehicle *v, int x, int y, VehicleID selection);