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Merge pull request #22 from xiangpin/master
add background point layer in grid level to be compatable with the framework of ggsc
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| #' Key drawing functions | ||
| #' | ||
| #' Each Geom has an associated function that draws the key when the geom needs | ||
| #' to be displayed in a legend. These are the options built into ggplot2. | ||
| #' | ||
| #' @param data A single row data frame containing the scaled aesthetics to | ||
| #' display in this key | ||
| #' @param params A list of additional parameters supplied to the geom. | ||
| #' @param size Width and height of key in mm. | ||
| #' @return A grid grob. | ||
| #' @name draw_key_scattermore2 | ||
| #' @export | ||
| #' @importFrom scales alpha | ||
| #' @importFrom ggplot2 draw_key_point | ||
| #' @importFrom grid grobTree pointsGrob | ||
| draw_key_scattermore2 <- function(data, params, size){ | ||
| pointkey <- draw_key_point(data, params, size) | ||
| if (is.null(data$bg_colour)){ | ||
| return (pointkey) | ||
| } | ||
|
|
||
| stroke_size <- data$stroke %||% 0.5 | ||
| stroke_size[is.na(stroke_size)] <- 0 | ||
|
|
||
| gp <- gpar(col = data$bg_colour, | ||
| fontsize = (data$size %||% 1.5) * .pt + stroke_size * .stroke / 2, | ||
| lwd = (data$stroke %||% 0.5) * 4) | ||
| grobTree(pointkey, pointsGrob(0.5, 0.5, pch = 21, gp = gp)) | ||
| } | ||
|
|
||
| .pt <- 2.845276 | ||
| .stroke <- 3.779528 | ||
|
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||
| `%||%` <- function (a, b){ | ||
| if (!is.null(a)) | ||
| a | ||
| else b | ||
| } | ||
|
|
||
| rd_aesthetics <- getFromNamespace("rd_aesthetics", "ggplot2") |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| ##' @importFrom grid unit | ||
| ##' @importFrom grid gpar | ||
| ##' @importFrom grid gList | ||
| ##' @importFrom grid gTree | ||
| ##' @importFrom grid is.unit | ||
| ##' @importFrom grid rasterGrob | ||
| crasterGrob <- function(image, bg.image = NULL, gap.image = NULL, | ||
| x = unit(0.5, "npc"), y = unit(0.5, "npc"), | ||
| width = NULL, height = NULL, just = "centre", | ||
| hjust = NULL, vjust = NULL, interpolate = TRUE, | ||
| default.units = "npc", name = NULL, gp = gpar(), | ||
| vp = NULL){ | ||
|
|
||
| upperGrob <- rasterGrob(image, x = x, y = y, width = width, height = height, | ||
| just = just, hjust = hjust, vjust =vjust, interpolate = interpolate, | ||
| default.units = default.units, name = name, gp = gp, vp = vp) | ||
|
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||
| if (is.null(bg.image)){ | ||
| return(upperGrob) | ||
| } | ||
|
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||
| bgGrob <- rasterGrob(bg.image, x = x, y = y, width = width, height = height, | ||
| just = just, hjust = hjust, vjust =vjust, | ||
| interpolate = interpolate, default.units = default.units, | ||
| name = name, gp = gp, vp = vp) | ||
|
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||
| gapGrob <- rasterGrob(gap.image, x = x, y = y, width = width, height = height, | ||
| just = just, hjust = hjust, vjust =vjust, | ||
| interpolate = interpolate, default.units = default.units, | ||
| name = name, gp = gp, vp = vp) | ||
|
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||
| grobs <- gList(bgGrob, gapGrob, upperGrob) | ||
| gTree(children = grobs) | ||
| } | ||
|
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||
| grid.craster <- function (image, bg.image, gap.image, x = unit(0.5, "npc"), | ||
| y = unit(0.5, "npc"), width = NULL, | ||
| height = NULL, just = "centre", hjust = NULL, | ||
| vjust = NULL, interpolate = TRUE, default.units = "npc", | ||
| name = NULL, gp = gpar(), vp = NULL){ | ||
|
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||
| rg <- crasterGrob(image, bg.image, gap.image, x = x, y = y, | ||
| width = width, height = height, just = just, | ||
| hjust = hjust, vjust = vjust, interpolate = interpolate, | ||
| default.units = default.units, name = name, gp = gp, | ||
| vp = vp) | ||
|
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||
| grid.draw(rg) | ||
| } | ||
|
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||
|
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||
| ##' @importFrom grid pointsGrob | ||
| cpointsGrob <- function(x = stats::runif(10), y = stats::runif(10), pch = 1, | ||
| size = unit(1, "char"), bg_line_width = .3, gap_line_width = .1, | ||
| bg_colour = "black", gap.colour = 'white', default.units = "native", | ||
| name = NULL, gp = gpar(), vp = NULL){ | ||
|
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||
| upperPointGrob <- pointsGrob(x = x, y = y, pch = pch, size = size, | ||
| default.units = default.units, name = name, | ||
| gp = gp, vp = vp) | ||
|
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||
| if (is.null(bg_colour)){ | ||
| return(upperPointGrob) | ||
| } | ||
|
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||
| gp.bg <- gp | ||
| gp.gap <- gp | ||
|
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||
| gp.bg$col <- bg_colour | ||
| gp.gap$col <- gap.colour | ||
|
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| gp$fontsize | ||
|
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| tmpsize <- sqrt(gp$fontsize) | ||
| gp.gap$fontsize <- (tmpsize + tmpsize * gap_line_width * 2)^2 | ||
| gp.bg$fontsize <- gp.gap$fontsize + (sqrt(bg_line_width) + tmpsize * bg_line_width * 2) ^2 | ||
|
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||
| gapPointGrob <- pointsGrob(x = x, y = y, pch = pch, size = size, | ||
| default.units = default.units, name = name, | ||
| gp = gp.gap, vp = vp) | ||
|
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||
| bgPointGrob <- pointsGrob(x = x, y = y, pch = pch, size = size, | ||
| default.units = default.units, name = name, | ||
| gp = gp.bg, vp = vp) | ||
|
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||
| grobs <- gList(bgPointGrob, gapPointGrob, upperPointGrob) | ||
| gTree(children = grobs) | ||
| } | ||
|
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||
| ##' @importFrom grid grid.draw | ||
| grid.cpoints <- function(x = stats::runif(10), y = stats::runif(10), pch = 1, | ||
| size = unit(1, "char"), bg_line_width = .3, gap_line_width = .1, | ||
| bg_colour = "black", gap.colour = 'white', default.units = "native", | ||
| name = NULL, gp = gpar(), draw = TRUE, vp = NULL){ | ||
| pg <- cpointsGrob(x = x, y = y, pch = pch, size = size, bg_line_width = bg_line_width, | ||
| gap_line_width = gap_line_width, bg_colour = bg_colour, | ||
| gap.colour = gap.colour, default.units = default.units, name = name, | ||
| gp = gp, vp = vp) | ||
| if (draw) grid.draw(pg) | ||
| invisible(pg) | ||
| } | ||
|
|
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