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206
js/notebook/src/tableDisplay/dataGrid/cell/BeakerxCellRenderer.ts
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| /* | ||
| * Copyright 2018 TWO SIGMA OPEN SOURCE, LLC | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| import { DEFAULT_ALIGNMENT } from "../column/columnAlignment"; | ||
| import {CellRenderer, GraphicsContext, TextRenderer} from "@phosphor/datagrid"; | ||
| import { BeakerxDataGrid } from "../BeakerxDataGrid"; | ||
| import DataGridCell from "./DataGridCell"; | ||
| import { | ||
| darken, | ||
| DEFAULT_CELL_BACKGROUND, | ||
| DEFAULT_DATA_FONT_COLOR, | ||
| DEFAULT_DATA_FONT_SIZE, | ||
| DEFAULT_HEADER_FONT_COLOR, formatColor | ||
| } from "../style/dataGridStyle"; | ||
|
|
||
| export default class BeakerxCellRenderer extends TextRenderer { | ||
| dataGrid: BeakerxDataGrid; | ||
| backgroundColor: CellRenderer.ConfigOption<string>; | ||
| horizontalAlignment: CellRenderer.ConfigOption<TextRenderer.HorizontalAlignment>; | ||
| format: TextRenderer.FormatFunc; | ||
| font: CellRenderer.ConfigOption<string>; | ||
| textColor: CellRenderer.ConfigOption<string>; | ||
|
|
||
| constructor(dataGrid: BeakerxDataGrid, options?: TextRenderer.IOptions) { | ||
| super(options); | ||
|
|
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| this.dataGrid = dataGrid; | ||
| this.backgroundColor = this.getBackgroundColor.bind(this); | ||
| this.horizontalAlignment = this.getHorizontalAlignment.bind(this); | ||
| this.format = this.getFormat.bind(this); | ||
| this.font = this.getFont.bind(this); | ||
| this.textColor = this.getTextColor.bind(this); | ||
| } | ||
|
|
||
| getBackgroundColor(config: CellRenderer.ICellConfig): string { | ||
| if (DataGridCell.isHeaderCell(config)) { | ||
| return DEFAULT_CELL_BACKGROUND; | ||
| } | ||
|
|
||
| let selectionColor = this.dataGrid.cellSelectionManager.getBackgroundColor(config); | ||
| let highlighterColor = this.dataGrid.highlighterManager.getCellBackground(config); | ||
| let focusedColor = this.dataGrid.cellFocusManager.getFocussedCellBackground(config); | ||
| let initialColor = selectionColor && highlighterColor && darken(highlighterColor); | ||
|
|
||
| return focusedColor && initialColor && darken(initialColor) || | ||
| focusedColor || | ||
| initialColor || | ||
| highlighterColor || | ||
| selectionColor || | ||
| DEFAULT_CELL_BACKGROUND; | ||
| } | ||
|
|
||
| getHorizontalAlignment(config: CellRenderer.ICellConfig): string { | ||
| let column = this.dataGrid.getColumn(config); | ||
|
|
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| return column ? column.getAlignment() : DEFAULT_ALIGNMENT; | ||
| } | ||
|
|
||
| getFormat(config: CellRenderer.ICellConfig) { | ||
| let column = this.dataGrid.getColumn(config); | ||
|
|
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| return DataGridCell.isHeaderCell(config) ? config.value : column.formatFn(config); | ||
| } | ||
|
|
||
| getFont({ region }): string { | ||
| let fontSize = (region === 'column-header' || region === 'corner-header') | ||
| ? this.dataGrid.model.state.headerFontSize | ||
| : this.dataGrid.model.state.dataFontSize; | ||
|
|
||
| return `normal ${fontSize || DEFAULT_DATA_FONT_SIZE}px Lato, Helvetica, sans-serif` | ||
| } | ||
|
|
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| getTextColor(config): string { | ||
| if (config.region === 'row-header') { | ||
| return DEFAULT_DATA_FONT_COLOR; | ||
| } | ||
|
|
||
| let colors = this.dataGrid.model.state.fontColor; | ||
| let dataFontColor = colors && colors[config.row] | ||
| ? formatColor(colors[config.row][config.column]) | ||
| : DEFAULT_DATA_FONT_COLOR; | ||
|
|
||
| return config.region === 'column-header' || config.region === "corner-header" | ||
| ? DEFAULT_HEADER_FONT_COLOR | ||
| : dataFontColor; | ||
| } | ||
|
|
||
| drawText(gc: GraphicsContext, config: CellRenderer.ICellConfig): void { | ||
| // Resolve the font for the cell. | ||
| let font = CellRenderer.resolveOption(this.font, config); | ||
|
|
||
| // Bail if there is no font to draw. | ||
| if (!font) { | ||
| return; | ||
| } | ||
|
|
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| // Resolve the text color for the cell. | ||
| let color = CellRenderer.resolveOption(this.textColor, config); | ||
|
|
||
| // Bail if there is no text color to draw. | ||
| if (!color) { | ||
| return; | ||
| } | ||
|
|
||
| // Format the cell value to text. | ||
| let format = this.format; | ||
| let text = format(config); | ||
|
|
||
| // Bail if there is no text to draw. | ||
| if (!text) { | ||
| return; | ||
| } | ||
|
|
||
| // Resolve the vertical and horizontal alignment. | ||
| let vAlign = CellRenderer.resolveOption(this.verticalAlignment, config); | ||
| let hAlign = CellRenderer.resolveOption(this.horizontalAlignment, config); | ||
|
|
||
| // Compute the padded text box height for the specified alignment. | ||
| let boxHeight = config.height - (vAlign === 'center' ? 1 : 2); | ||
|
|
||
| // Bail if the text box has no effective size. | ||
| if (boxHeight <= 0) { | ||
| return; | ||
| } | ||
|
|
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| // Compute the text height for the gc font. | ||
| let textHeight = TextRenderer.measureFontHeight(font); | ||
|
|
||
| // Set up the text position variables. | ||
| let textX: number; | ||
| let textY: number; | ||
|
|
||
| // Compute the Y position for the text. | ||
| switch (vAlign) { | ||
| case 'top': | ||
| textY = config.y + 2 + textHeight; | ||
| break; | ||
| case 'center': | ||
| textY = config.y + config.height / 2 + textHeight / 2; | ||
| break; | ||
| case 'bottom': | ||
| textY = config.y + config.height - 2; | ||
| break; | ||
| default: | ||
| throw 'unreachable'; | ||
| } | ||
|
|
||
| // Compute the X position for the text. | ||
| switch (hAlign) { | ||
| case 'left': | ||
| textX = config.x + 2; | ||
| break; | ||
| case 'center': | ||
| textX = config.x + config.width / 2; | ||
| break; | ||
| case 'right': | ||
| textX = config.x + config.width - 3; | ||
| break; | ||
| default: | ||
| throw 'unreachable'; | ||
| } | ||
|
|
||
| // Clip the cell if the text is taller than the text box height. | ||
| if (textHeight > boxHeight) { | ||
| gc.beginPath(); | ||
| gc.rect(config.x, config.y, config.width, config.height - 1); | ||
| gc.clip(); | ||
| } | ||
|
|
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| let verticalHeader = DataGridCell.isHeaderCell(config) && this.dataGrid.model.state.headersVertical; | ||
|
|
||
| // Set the gc state. | ||
| gc.textBaseline = 'bottom'; | ||
| gc.textAlign = hAlign; | ||
|
|
||
| if(verticalHeader) { | ||
| gc.save(); | ||
| gc.rotate(-Math.PI/2); | ||
|
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| textX = -config.height + 2; | ||
| textY = config.x + config.width - 3; | ||
| gc.textBaseline = 'bottom'; | ||
| gc.textAlign = 'left'; | ||
| } | ||
|
|
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| gc.font = font; | ||
| gc.fillStyle = color; | ||
|
|
||
| // Draw the text for the cell. | ||
| gc.fillText(text, textX, textY); | ||
| verticalHeader && gc.restore(); | ||
| } | ||
| } |
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