more hover

1 files changed, 79 insertions, 0 deletions

diff --git a/hover.c b/hover.c
new file mode 100644
index 0000000..8b4794a
--- /dev/null
+++ b/hover.c
@@ -0,0 +1,79 @@
+// LSP hover information (textDocument/hover request)
+
+void hover_close(Ted *ted) {
+	Hover *hover = &ted->hover;
+	hover->time = 0.0;
+	hover->open = false;
+	free(hover->text);
+	hover->text = NULL;
+}
+
+void hover_send_request(Ted *ted) {
+	// find the buffer where the mouse is
+	for (int i = 0; i < TED_MAX_BUFFERS; ++i) {
+		TextBuffer *buffer = &ted->buffers[i];
+		if (!buffer->filename) continue;
+		LSP *lsp = buffer_lsp(buffer);
+		if (!lsp) continue;
+		BufferPos mouse_pos = {0};
+		if (buffer_pixels_to_pos(buffer, ted->mouse_pos, &mouse_pos)) {
+			// send the request
+			LSPRequest request = {.type = LSP_REQUEST_HOVER};
+			LSPRequestHover *h = &request.data.hover;
+			h->position = buffer_pos_to_lsp_document_position(buffer, mouse_pos);
+			lsp_send_request(lsp, &request);
+			break;
+		}
+	}
+}
+
+void hover_process_lsp_response(Ted *ted, LSPResponse *response) {
+	if (!response) return;
+	if (response->request.type != LSP_REQUEST_HOVER) return;
+	
+	Hover *hover = &ted->hover;
+	LSPResponseHover *hover_response = &response->data.hover;
+	free(hover->text);
+	hover->text = NULL;
+	
+	const char *contents = lsp_response_string(response, hover_response->contents);
+	if (*contents) {
+		hover->text = str_dup(contents);
+		char *p = hover->text + strlen(hover->text) - 1;
+		// remove trailing whitespace
+		// (rust-analyzer gives us trailing newlines for local variables)
+		for (; p > hover->text && isspace(*p); --p)
+			*p = '\0';
+	}
+}
+
+void hover_frame(Ted *ted, double dt) {
+	Hover *hover = &ted->hover;
+	
+	if (ted->autocomplete.open) {
+		hover_close(ted);
+	}
+	
+	if (!hover->open) {
+		hover->time += dt;
+		if (hover->time > 1.0) {
+			hover_send_request(ted);
+			hover->open = true;
+		}
+		return;
+	}
+	
+	if (!hover->text)
+		return;
+	
+	const char *text = hover->text;
+	u16 lines = 0; // number of lines of text
+	for (int i = 0; text[i]; ++i)
+		if (text[i] == '\n')
+			++lines;
+	
+	//Font *font = ted->font;
+	//float width = 200, height = lines * font->char_height;
+	
+	
+}