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@@ -40,33 +40,41 b' class UnknownBackend(KeyError):' | |||
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40 | 40 | ', '.join(backends + sorted(registered))) |
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41 | 41 | |
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42 | 42 | |
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43 | last_qt_version = None | |
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44 | """Stores which version (i.e. `gui`) was requested the first time.""" | |
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45 | ||
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46 | ||
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47 | 43 | def set_qt_api(gui): |
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48 | 44 | """Sets the `QT_API` environment variable if it isn't already set.""" |
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49 | 45 | |
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50 | global last_qt_version | |
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46 | qt_api = os.environ.get("QT_API", None) | |
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51 | 47 | |
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52 | if gui != "qt" and last_qt_version is not None: | |
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53 | if last_qt_version != gui: | |
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54 | raise ValueError( | |
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55 | "Cannot switch Qt versions for this session; " | |
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56 | f"must use {last_qt_version}." | |
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48 | from IPython.external.qt_loaders import ( | |
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49 | QT_API_PYQT, | |
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50 | QT_API_PYQT5, | |
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51 | QT_API_PYQT6, | |
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52 | QT_API_PYSIDE, | |
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53 | QT_API_PYSIDE2, | |
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54 | QT_API_PYSIDE6, | |
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55 | QT_API_PYQTv1, | |
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56 | loaded_api, | |
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57 | ) | |
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58 | ||
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59 | loaded = loaded_api() | |
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60 | ||
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61 | qt_env2gui = { | |
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62 | QT_API_PYSIDE: 'qt4', | |
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63 | QT_API_PYQTv1: 'qt4', | |
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64 | QT_API_PYQT: 'qt4', | |
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65 | QT_API_PYSIDE2: 'qt5', | |
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66 | QT_API_PYQT5: 'qt5', | |
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67 | QT_API_PYSIDE6: 'qt6', | |
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68 | QT_API_PYQT6: 'qt6', | |
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69 | } | |
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70 | if loaded is not None and gui != 'qt': | |
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71 | if qt_env2gui[loaded] != gui: | |
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72 | raise ImportError( | |
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73 | f'Cannot switch Qt versions for this session; must use {qt_env2gui[loaded]}.' | |
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57 | 74 | ) |
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58 | 75 | |
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59 | qt_api = os.environ.get("QT_API", None) | |
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60 | if qt_api is not None and gui != "qt": | |
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61 | env2gui = { | |
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62 | "pyside": "qt4", | |
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63 | "pyqt": "qt4", | |
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64 | "pyside2": "qt5", | |
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65 | "pyqt5": "qt5", | |
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66 | "pyside6": "qt6", | |
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67 | "pyqt6": "qt6", | |
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68 | } | |
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69 | if env2gui[qt_api] != gui: | |
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76 | if qt_api is not None and gui != 'qt': | |
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77 | if qt_env2gui[qt_api] != gui: | |
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70 | 78 | print( |
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71 | 79 | f'Request for "{gui}" will be ignored because `QT_API` ' |
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72 | 80 | f'environment variable is set to "{qt_api}"' |
@@ -119,9 +127,6 b' def set_qt_api(gui):' | |||
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119 | 127 | f'Unrecognized Qt version: {gui}. Should be "qt4", "qt5", "qt6", or "qt".' |
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120 | 128 | ) |
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121 | 129 | |
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122 | # Due to the import mechanism, we can't change Qt versions once we've chosen one. So we tag the | |
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123 | # version so we can check for this and give an error. | |
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124 | last_qt_version = gui | |
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125 | 130 | |
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126 | 131 | def get_inputhook_name_and_func(gui): |
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127 | 132 | print(f"`get_inputhook_name_and_func` called with {gui=}") |
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