terminal/src/renderer/dx/ut_dx/product.pbxproj

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Restrict DX run height adjustment to only relevant glyph AND Correct PTY rendering on trailing half of fullwidth glyphs (#4668) ## Summary of the Pull Request - Height adjustment of a glyph is now restricted to itself in the DX renderer instead of applying to the entire run - ConPTY compensates for drawing the right half of a fullwidth character. The entire render base has this behavior restored now as well. ## PR Checklist * [x] Closes #2191 * [x] I work here * [x] Tests added/passed * [x] No doc * [x] Am core contributor. ## Detailed Description of the Pull Request / Additional comments Two issues: 1. On the DirectX renderer side, when confronted with shrinking a glyph, the correction code would apply the shrunken size to the entire run, not just the potentially individual glyph that needed to be reduced in size. Unfortunately while adjusting the horizontal X width can be done for each glyph in a run, the vertical Y height has to be adjusted for an entire run. So the solution here was to split the individual glyph needing shrinking out of the run into its own run so it can be shrunk. 2. On the ConPTY side, there was a long standing TODO that was never completed to deal with a request to draw only the right half of a two-column character. This meant that when encountering a request for the right half only, we would transmit the entire full character to be drawn, left and right halves, struck over the right half position. Now we correct the cursor back a position (if space) and draw it out so the right half is struck over where we believe the right half should be (and the left half is updated as well as a consequence, which should be OK.) The reason this happens right now is because despite VIM only updating two cells in the buffer, the differential drawing calculation in the ConPTY is very simplistic and intersects only rectangles. This means from the top left most character drawn down to the row/col cursor count indicator in vim's modeline are redrawn with each character typed. This catches the line below the edited line in the typing and refreshes it. But incorrectly. We need to address making ConPTY smarter about what it draws incrementally as it's clearly way too chatty. But I plan to do that with some of the structures I will be creating to solve #778. ## Validation Steps Performed - Ran the scenario listed in #2191 in vim in the Terminal - Added unit tests similar to examples given around glyph/text mapping in runs from Microsoft community page 2020-02-21 01:24:12 +01:00			`<?xml version="1.0" encoding="utf-8"?>`
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