From 892cba67fba9c442d77be1d467e2152b188c3a81 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Mon, 18 Mar 2019 17:50:59 +0100
Subject: [roomplanner] Implement (auto)rotating SVG, make SVG pretty

---
 modules-available/roomplanner/api.inc.php          |  5 +-
 .../roomplanner/inc/pvsgenerator.inc.php           | 91 ++++++++++++++++++----
 .../roomplanner/templates/svg-plan.html            | 52 ++++++++++---
 3 files changed, 121 insertions(+), 27 deletions(-)

diff --git a/modules-available/roomplanner/api.inc.php b/modules-available/roomplanner/api.inc.php
index 1494ba28..055c6b2e 100644
--- a/modules-available/roomplanner/api.inc.php
+++ b/modules-available/roomplanner/api.inc.php
@@ -1,8 +1,9 @@
 <?php
 
 if (Request::any('show') === 'svg') {
-	$ret = PvsGenerator::generateSvg(Request::any('locationid', 0, 'int'),
-		Request::any('machineuuid', false, 'string'));
+	$ret = PvsGenerator::generateSvg(Request::any('locationid', false, 'int'),
+		Request::any('machineuuid', false, 'string'),
+		Request::any('rotate', 0, 'int'));
 	if ($ret === false) {
 		Header('HTTP/1.1 404 Not Found');
 		exit;
diff --git a/modules-available/roomplanner/inc/pvsgenerator.inc.php b/modules-available/roomplanner/inc/pvsgenerator.inc.php
index 4cda4582..6bc8ebee 100644
--- a/modules-available/roomplanner/inc/pvsgenerator.inc.php
+++ b/modules-available/roomplanner/inc/pvsgenerator.inc.php
@@ -145,38 +145,96 @@ class PvsGenerator
 	}
 
 	/**
-	 * Render given location's room plan as SVG
-	 * @param int $locationId
+	 * Render given location's room plan as SVG.
+	 * If locationId is given, show roomplan for that location.
+	 * If additionally, machineUuid is given, try to highlight
+	 * the given machine in the plan. If only machineUuid is
+	 * given, determine locationId from machine.
+	 *
+	 * @param int|false $locationId
 	 * @param string|false $highlightUuid
+	 * @param int $rotate rotate plan (0-3 for N E S W up, -1 for "auto" if highlightUuid is given)
 	 * @return string SVG
 	 */
-	public static function generateSvg($locationId, $highlightUuid = false)
+	public static function generateSvg($locationId = false, $highlightUuid = false, $rotate = 0)
 	{
+		if ($locationId === false) {
+			$locationId = Database::queryFirst('SELECT locationid FROM machine WHERE machineuuid = :uuid',
+				['uuid' => $highlightUuid]);
+			if ($locationId !== false) {
+				$locationId = $locationId['locationid'];
+			}
+		}
 		$machines = self::getMachines($locationId);
 		if (empty($machines))
 			return false;
-		PvsGenerator::boundingBox($machines, $minX, $minY, $maxX, $maxY);
-		$clientSizeX = 4; /* TODO: optimize */
-		$clientSizeY = 4; /* TODO: optimize */
-		$sizeX = max($maxX - $minX + $clientSizeX, 1); /* never negative */
-		$sizeY = max($maxY - $minY + $clientSizeY, 1); /* and != 0 to avoid divide-by-zero in pvsmgr */
+
+		$ORIENTATION = ['north' => 2, 'east' => 3, 'south' => 0, 'west' => 1];
 		if (is_string($highlightUuid)) {
-			$highlightUuid = strtolower($highlightUuid);
+			$highlightUuid = strtoupper($highlightUuid);
+		}
+		// Figure out autorotate
+		$auto = ($rotate < 0);
+		if ($auto && $highlightUuid !== false) {
+			foreach ($machines as &$machine) {
+				if ($machine['machineuuid'] === $highlightUuid) {
+					$rotate = $ORIENTATION[$machine['rotation']];
+					break;
+				}
+			}
 		}
+		$rotate %= 4;
+		// Highlight given machine, rotate it's "keyboard"
 		foreach ($machines as &$machine) {
-			if (strtolower($machine['machineuuid']) === $highlightUuid) {
+			if ($machine['machineuuid'] === $highlightUuid) {
 				$machine['class'] = 'hl';
 			}
+			$machine['rotation'] = $ORIENTATION[$machine['rotation']] * 90;
+		}
+		PvsGenerator::boundingBox($machines, $minX, $minY, $maxX, $maxY);
+		$clientSizeX = 4; /* TODO: optimize */
+		$clientSizeY = 4; /* TODO: optimize */
+		$minX--;
+		$minY--;
+		$maxX++;
+		$maxY++;
+		$sizeX = max($maxX - $minX + $clientSizeX, 1); /* never negative */
+		$sizeY = max($maxY - $minY + $clientSizeY, 1); /* and != 0 to avoid divide-by-zero in pvsmgr */
+		if ($rotate === 0) {
+			$centerY = $centerX = 0;
+		} elseif ($rotate === 1) {
+			$centerX = $minX + min($sizeX, $sizeY) / 2;
+			$centerY = $minY + min($sizeX, $sizeY) / 2;
+			self::swap($sizeX, $sizeY);
+		} elseif ($rotate === 2) {
+			$centerX = $minX + $sizeX / 2;
+			$centerY = $minY + $sizeY / 2;
+		} else {
+			$centerX = $minX + max($sizeX, $sizeY) / 2;
+			$centerY = $minY + max($sizeX, $sizeY) / 2;
+			self::swap($sizeX, $sizeY);
 		}
 		return Render::parse('svg-plan', [
-			'width' => $sizeX + 2,
-			'height' => $sizeY + 2,
-			'minX' => $minX - 1,
-			'minY' => $minY - 1,
+			'width' => $sizeX,
+			'height' => $sizeY,
+			'centerX' => $centerX,
+			'centerY' => $centerY,
+			'rotate' => $rotate * 90,
+			'shiftX' => -$minX,
+			'shiftY' => -$minY,
 			'machines' => $machines,
+			'line' => ['x1' => $minX, 'y1' => $maxY + $clientSizeY,
+				'x2' => $maxX + $clientSizeX, 'y2' => $maxY + $clientSizeY],
 		], 'roomplanner'); // FIXME: Needs module param if called from api.inc.php
 	}
 
+	private static function swap(&$a, &$b)
+	{
+		$tmp = $a;
+		$a = $b;
+		$b = $tmp;
+	}
+
 	/**
 	 * Get all clients for given room with IP and position.
 	 *
@@ -197,11 +255,16 @@ class PvsGenerator
 			if ($position === false || !isset($position['gridRow']) || !isset($position['gridCol']))
 				continue; // TODO: Remove entry/set to NULL?
 
+			$rotation = 'north';
+			if (preg_match('/(north|east|south|west)/', $position['itemlook'], $out)) {
+				$rotation = $out[1];
+			}
 			$machines[] = array(
 				'machineuuid' => $row['machineuuid'],
 				'clientip' => $row['clientip'],
 				'gridRow' => $position['gridRow'],
 				'gridCol' => $position['gridCol'],
+				'rotation' => $rotation,
 			);
 		}
 
diff --git a/modules-available/roomplanner/templates/svg-plan.html b/modules-available/roomplanner/templates/svg-plan.html
index 1fdb5d1a..5e1e13b2 100644
--- a/modules-available/roomplanner/templates/svg-plan.html
+++ b/modules-available/roomplanner/templates/svg-plan.html
@@ -7,24 +7,54 @@
 	  height="{{height}}mm">
 	<style type="text/css">
 		<![CDATA[
-      rect {
+		rect {
 			stroke: #000;
-			fill: #fff;
-			stroke-width: .5;
+		}
+		rect.kb {
+			fill: #999;
+			stroke-width: .1;
+		}
+		rect.scrn {
+			stroke-width: .2;
+			fill: url(#screen);
 		}
 		rect.hl {
-			fill: #f00;
+			fill: url(#screenhl);
 		}
 		]]>
 	</style>
-	<g transform="translate(-{{minX}}, -{{minY}})">
+	<defs>
+		<radialGradient id="screen" cx=".4" cy=".3" r="1">
+			<stop offset="0%" stop-color="#888" />
+			<stop offset="100%" stop-color="#000" />
+		</radialGradient>
+		<radialGradient id="screenhl" cx=".4" cy=".3" r="1">
+			<stop offset="0%" stop-color="#f83" />
+			<stop offset="100%" stop-color="#b55" />
+		</radialGradient>
+	</defs>
+	<g transform="translate({{shiftX}}, {{shiftY}}) rotate({{rotate}} {{centerX}} {{centerY}})">
+		<line x1="{{line.x1}}" y1="{{line.y1}}"
+				x2="{{line.x2}}" y2="{{line.y2}}"
+				style="stroke:#555;stroke-width:.2;opacity:.5" />
 		{{#machines}}
-		<rect
-				x="{{gridCol}}"
-				y="{{gridRow}}"
-				height="3.8"
-				width="3.8"
-				class="{{class}}" />
+			<g transform="translate({{gridCol}} {{gridRow}})">
+				<rect transform="rotate({{rotation}} 1.9 1.9)"
+						x=".1"
+						y="2.6"
+						height="1"
+						width="3.6"
+						class="kb" />
+				<rect transform="rotate({{rotation}} 1.9 1.9)"
+						x=".2"
+						y=".2"
+						rx=".4"
+						ry=".4"
+						height="2.2"
+						width="3.4"
+						class="scrn {{class}}"
+						/>
+			</g>
 		{{/machines}}
 	</g>
 </svg>
-- 
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