(svn r18731) -Codechange: move the DrawStationCoverage stuff from misc_gui.cpp to station_gui.cpp

1 files changed, 91 insertions, 0 deletions

diff --git a/src/station_gui.cpp b/src/station_gui.cpp
index 104a53c72..45208d83a 100644
--- a/src/station_gui.cpp
+++ b/src/station_gui.cpp
@@ -35,6 +35,97 @@
 #include "table/sprites.h"
 
 /**
+ * Draw a (multi)line of cargos seperated by commas, and prefixed with a string.
+ * @param cargo_mask Mask of cargos to include in the list.
+ * @param r          Rectangle to draw the cargos in.
+ * @param prefix     String to use as prefix for the list of cargos.
+ * @return Bottom position of the last line used for drawing the cargos.
+ */
+int DrawCargoListText(uint32 cargo_mask, const Rect &r, StringID prefix)
+{
+	bool first = true;
+	char string[512];
+	char *b = InlineString(string, prefix);
+
+	for (CargoID i = 0; i < NUM_CARGO; i++) {
+		if (b >= lastof(string) - (1 + 2 * 4)) break; // ',' or ' ' and two calls to Utf8Encode()
+		if (HasBit(cargo_mask, i)) {
+			if (first) {
+				first = false;
+			} else {
+				/* Add a comma if this is not the first item */
+				*b++ = ',';
+				*b++ = ' ';
+			}
+			b = InlineString(b, CargoSpec::Get(i)->name);
+		}
+	}
+
+	/* If first is still true then no cargo is accepted */
+	if (first) b = InlineString(b, STR_JUST_NOTHING);
+
+	*b = '\0';
+
+	/* Make sure we detect any buffer overflow */
+	assert(b < endof(string));
+
+	SetDParamStr(0, string);
+	return DrawStringMultiLine(r.left, r.right, r.top, r.bottom, STR_JUST_RAW_STRING);
+}
+
+/**
+ * Calculates and draws the accepted or supplied cargo around the selected tile(s)
+ * @param left x position where the string is to be drawn
+ * @param right the right most position to draw on
+ * @param top y position where the string is to be drawn
+ * @param sct which type of cargo is to be displayed (passengers/non-passengers)
+ * @param rad radius around selected tile(s) to be searched
+ * @param supplies if supplied cargos should be drawn, else accepted cargos
+ * @return Returns the y value below the string that was drawn
+ */
+int DrawStationCoverageAreaText(int left, int right, int top, StationCoverageType sct, int rad, bool supplies)
+{
+	TileIndex tile = TileVirtXY(_thd.pos.x, _thd.pos.y);
+	if (tile < MapSize()) {
+		CargoArray cargos;
+		if (supplies) {
+			cargos = GetProductionAroundTiles(tile, _thd.size.x / TILE_SIZE, _thd.size.y / TILE_SIZE, rad);
+		} else {
+			cargos = GetAcceptanceAroundTiles(tile, _thd.size.x / TILE_SIZE, _thd.size.y / TILE_SIZE, rad);
+		}
+
+		/* Convert cargo counts to a set of cargo bits, and draw the result. */
+		uint32 cargo_mask = 0;
+		for (CargoID i = 0; i < NUM_CARGO; i++) {
+			switch (sct) {
+				case SCT_PASSENGERS_ONLY: if (!IsCargoInClass(i, CC_PASSENGERS)) continue; break;
+				case SCT_NON_PASSENGERS_ONLY: if (IsCargoInClass(i, CC_PASSENGERS)) continue; break;
+				case SCT_ALL: break;
+				default: NOT_REACHED();
+			}
+			if (cargos[i] >= (supplies ? 1U : 8U)) SetBit(cargo_mask, i);
+		}
+		Rect r = {left, top, right, INT32_MAX};
+		return DrawCargoListText(cargo_mask, r, supplies ? STR_STATION_BUILD_SUPPLIES_CARGO : STR_STATION_BUILD_ACCEPTS_CARGO);
+	}
+
+	return top;
+}
+
+/**
+ * Check whether we need to redraw the station coverage text.
+ * If it is needed actually make the window for redrawing.
+ * @param w the window to check.
+ */
+void CheckRedrawStationCoverage(const Window *w)
+{
+	if (_thd.dirty & 1) {
+		_thd.dirty &= ~1;
+		w->SetDirty();
+	}
+}
+
+/**
  * Draw small boxes of cargo amount and ratings data at the given
  * coordinates. If amount exceeds 576 units, it is shown 'full', same
  * goes for the rating: at above 90% orso (224) it is also 'full'