R/tmapLeafletComp_funs.R

In r-tmap/tmap: Thematic Maps

#' @export
tmapLeafletCompPrepare.tm_title = function(comp, o) {
	comp$show = TRUE
	comp
}


#' @export
tmapLeafletCompHeight.tm_title = function(comp, o) {
	comp
}

#' @export
tmapLeafletCompWidth.tm_title = function(comp, o) {
	comp
}


#' @export
tmapLeafletLegPlot.tm_title = function(comp, lf, o) {
	if (inherits(lf, "shiny.tag.list")) {
		ncld <- length(lf[[1]])
		lf[[1]] <- mapply(function(l, i) {
			title <- l$children[[1]]$title %||% ""
			if (title!="") {
				l$children[[1]] <- l$children[[1]] %>% htmlwidgets::onRender(paste("
					function(el, x) {
						var tldiv = el.getElementsByClassName(\"leaflet-top leaflet-left\")[0];
						var titlediv = document.createElement('div');
						titlediv.className = \"info legend leaflet-control\";
						titlediv.innerHTML = \"<b>", title, "</b>\";
						tldiv.insertBefore(titlediv, tldiv.childNodes[0]);
					}", sep="")
				)
			}
			l
		}, lf[[1]], 0:(ncld-1), SIMPLIFY = FALSE)
	} else {
		title <- comp$text %||% ""
		if (title!="") {
			lf <- lf %>% htmlwidgets::onRender(paste("
						function(el, x) {
							var tldiv = el.getElementsByClassName(\"leaflet-top leaflet-left\")[0];
							var titlediv = document.createElement('div');
							titlediv.className = \"info legend leaflet-control\";
							titlediv.innerHTML = \"<b>", title, "</b>\";
							tldiv.insertBefore(titlediv, tldiv.childNodes[0]);
						}", sep="")
			)
		}
	}
	lf

}



#' @export
tmapLeafletCompPrepare.tm_compass = function(comp, o) {
	comp$show = TRUE
	comp
}


#' @export
tmapLeafletCompHeight.tm_compass = function(comp, o) {
	comp
}

#' @export
tmapLeafletCompWidth.tm_compass = function(comp, o) {
	comp
}


#' @export
tmapLeafletLegPlot.tm_compass = function(comp, lf, o) {
	lf %>% leafem::addLogo(system.file(paste0("img/compass_", comp$type, ".png"), package = "tmap"), src = "local", position = leaflet_pos(comp$position), width = 120, height = 120)
}



#' @export
tmapLeafletCompPrepare.tm_scalebar = function(comp, o) {
	comp$show = TRUE
	comp
}


#' @export
tmapLeafletCompHeight.tm_scalebar = function(comp, o) {
	comp
}

#' @export
tmapLeafletCompWidth.tm_scalebar = function(comp, o) {
	comp
}


#' @export
tmapLeafletLegPlot.tm_scalebar = function(comp, lf, o) {
	lf %>% leaflet::addScaleBar(position = leaflet_pos(comp$position))
}




#' @export
tmapLeafletCompPrepare.tm_credits = function(comp, o) {
	comp$show = TRUE
	comp
}


#' @export
tmapLeafletCompHeight.tm_credits = function(comp, o) {
	comp
}

#' @export
tmapLeafletCompWidth.tm_credits = function(comp, o) {
	comp
}


#' @export
tmapLeafletLegPlot.tm_credits = function(comp, lf, o) {
	#lf %>% leafem::addLogo(system.file(paste0("img/credits_", comp$type, ".png"), package = "tmsap"), src = "local", position = paste(unlist(comp$position[c("pos.v", "pos.h")]), collapse = ""), width = 120, height = 120)
	#message("tm_credits not implemented yet for view mode")
	lf %>% leaflet::addTiles(urlTemplate = "", attribution = comp$text)
}


#' @export
tmapLeafletCompPrepare.tm_mouse_coordinates = function(comp, o) {
	comp$show = TRUE
	comp
}


#' @export
tmapLeafletCompHeight.tm_mouse_coordinates = function(comp, o) {
	comp
}

#' @export
tmapLeafletCompWidth.tm_mouse_coordinates = function(comp, o) {
	comp
}


#' @export
tmapLeafletLegPlot.tm_mouse_coordinates = function(comp, lf, o) {
	lf %>% leafem::addMouseCoordinates()
}



#' @export
tmapLeafletCompPrepare.tm_minimap = function(comp, o) {
	comp$show = TRUE

	extra = comp[setdiff(intersect(names(comp), names(formals(leaflet::addMiniMap))), c("position", "map"))]

	comp$specified_tiles = !is.na(comp$server)

	comp$args = c(list(toggleDisplay = comp$toggle), extra)
	comp
}


#' @export
tmapLeafletCompHeight.tm_minimap = function(comp, o) {
	comp
}

#' @export
tmapLeafletCompWidth.tm_minimap = function(comp, o) {
	comp
}


#' @export
tmapLeafletLegPlot.tm_minimap = function(comp, lf, o) {
	comp$args$tiles = if (comp$specified_tiles) {
		comp$server
	} else if (length(.TMAP_LEAFLET$tiles)) {
		.TMAP_LEAFLET$tiles[[1]][[1]]$server[1]
	} else {
		o$basemap.server[1]
	}
	lf2 = do.call(addMiniMap, c(list(map = lf), comp$args))
	if (!comp$specified_tiles && (length(comp$args$tiles) > 0)) {
		lf2 <- lf2 %>%
			htmlwidgets::onRender("
			    function(el, x) {
			      var myMap = this;
			      myMap.on('baselayerchange',
			        function (e) {
			          myMap.minimap.changeLayer(L.tileLayer.provider(e.name));
			        })
			    }")
	}
	lf2
}

#' @export
tmapLeafletCompPrepare.tm_logo = function(comp, o) {
	comp$logo = lapply(comp$file, function(lf){
		tmap_icons(lf)
	})
	comp$asp = vapply(comp$logo, function(lg) {
		lg$iconWidth / lg$iconHeight
	}, FUN.VALUE = numeric(1))
	comp$show = TRUE
	comp
}


#' @export
tmapLeafletCompHeight.tm_logo = function(comp, o) {
	comp
}

#' @export
tmapLeafletCompWidth.tm_logo = function(comp, o) {
	comp
}

#' @export
tmapLeafletLegPlot.tm_logo = function(comp, lf, o) {
	for (i in 1:length(comp$logo)) {
		lf = lf %>% leafem::addLogo(comp$logo[[i]]$iconUrl, src = "local", position = leaflet_pos(comp$position))
	}
	lf
}



#' @export
tmapLeafletCompPrepare.tm_component_general = function(comp, o) {
	comp$dpl = comp$dpi * o$lin
	comp$grob.dim = c(width=comp$width * comp$dpl, height=comp$height * comp$dpl, render.width=comp$width * comp$dpl, render.height=comp$height * comp$dpl)
	comp$logo = grob2icon(comp$x, comp$grob.dim, just = c(0.5, 0.5))
	comp$asp = comp$logo$iconWidth / comp$logo$iconHeight
	comp$show = TRUE

	comp
}


#' @export
tmapLeafletCompHeight.tm_component_general = function(comp, o) {
	comp
}

#' @export
tmapLeafletCompWidth.tm_component_general = function(comp, o) {
	comp
}

#' @export
tmapLeafletLegPlot.tm_component_general = function(comp, lf, o) {
	lf %>% leafem::addLogo(comp$logo$iconUrl, src = "local", position = leaflet_pos(comp$position), width = comp$grob.dim['render.width'], height = comp$grob.dim['render.height'])

}


#' @export
tmapLeafletCompPrepare.tm_inset = function(comp, o) {
	comp$show = FALSE
	comp
}


#' @export
tmapLeafletCompHeight.tm_inset = function(comp, o) {
	comp
}

#' @export
tmapLeafletCompWidth.tm_inset = function(comp, o) {
	comp
}

#' @export
tmapLeafletLegPlot.tm_inset = function(comp, lf, o) {
	lf
}